2024
- Scatophobic Dark Matter
2404.00690 [abs] [pdf]
[abstract]
by Gerald X. Gilbert-Thorple and Jôsé J. Jesus.
An outstanding mystery of dark matter physics is the lack of direct detection
signals to date. We suggest that dark matter is scatophobic: due to a repulsive
long-range interaction, it is repelled by objects with a large net scat charge,
such as the Earth, and is therefore not able to reach direct detection
experiments. This represents the first step in a broader theoretical paradigm
that we dub the "anti-anthropic principle."
- pastamarkers: astrophysical data visualization with pasta-like markers
2403.20314 [abs] [pdf]
[abstract]
by PASTA Collaboration, [and 6 more]N. Borghi, E. Ceccarelli, A. Della Croce, L. Leuzzi, L. Rosignoli, and A. Traina [hide authors].
We aim at facilitating the visualization of astrophysical data for several
tasks, such as uncovering patterns, presenting results to the community, and
facilitating the understanding of complex physical relationships to the public.
We present pastamarkers, a customized Python package fully compatible with
matplotlib, that contains unique pasta-shaped markers meant to enhance the
visualization of astrophysical data. We prove that using different pasta types
as markers can improve the clarity of astrophysical plots by reproducing some
of the most famous plots in the literature.
- I'm in AGNi: A new standard for AGN pluralisation
2403.20302 [abs] [pdf]
[abstract]
by Andrew D. Gow, Peter Clark, and Dan Rycanowski.
We present a new standard acronym for Active Galactic Nuclei, finally
settling the argument of AGN vs. AGNs. Our new standard is not only
etymologically superior (following the consensus set by SNe), but also boasts
other linguistic opportunities, connecting strongly with relevant theology and
streamlining descriptions of AGN properties.
- Vulcan: Retreading a Tired Hypothesis with the 2024 Total Solar Eclipse
2403.20281 [abs] [pdf]
[abstract]
by Michael B. Lund.
The number of planets in the solar system over the last three centuries has,
perhaps surprisingly, been less of a fixed value than one would think it should
be. In this paper, we look at the specific case of Vulcan, which was both a
planet before Pluto was a planet and discarded from being a planet before Pluto
was downgraded. We examine the historical context that led to its discovery in
the 19th century, the decades of observations that were taken of it, and its
eventual fall from glory. By applying a more modern understanding of
astrophysics, we provide multiple mechanisms that may have changed the orbit of
Vulcan sufficiently that it would have been outside the footprint of early 20th
century searches for it. Finally, we discuss how the April 8, 2024 eclipse
provides a renewed opportunity to rediscover this lost planet after more than a
century of having been overlooked.
- In Violation of the Prime Directive: Simulating detriments to
Delta-Quadrant civilizations from the starship Voyager's impact on planetary
rings
2403.20268 [abs] [pdf]
[abstract]
by J. Fowler and Ruth Murray-Clay.
In the seven years that the starship Voyager spent in the Delta Quadrant, it
used many questionable techniques to engage with alien civilizations and
ultimately find its way home. From detailed studies of their logs and opening
credits, we simulate Voyager's practice of orbiting a planet, to examine the
effect on planetary rings. We outline a feasible planetary system and simulate
the extent to which its rings would be disrupted. We find that Voyager's orbit
could inflate the height of the rings in the vicinity of the spacecraft by a
factor of 2, as well as increase the relative speeds of neighboring
planetesimals within the rings. This increase in ring thickness has the
potential to alter shadows on any moons of this planet, impacting ring-shadow
based religions. Additionally, the acceleration of these planetesimals could
rival their gravity, bucking any alien inhabitants and their tiny civilizations
off of their planetesimal homeworlds. Finally, we posit that due to increased
collisions amongst the planetesimals (which may harbor tiny intelligent life)
the trajectory of these civilizations may be forever altered, violating the
prime directive.
- The Public Photometry Pipelines for Exoplanets
2403.20223 [abs] [pdf]
[abstract]
by Patricio E. Cubillos.
Over the past decade, exoplanet atmospheric characterization has became what
some might call the cosmology of astronomy. In an attempt to extract and
understand the weak planetary signals (a few percent down to a few tens of ppm
times that of their host-star signals), researchers have developed dozens of
idealized planetary atmospheric models. Physical interpretations hinge on
pretending that we understand stellar signals (as well behaved mostly
temporarily static spherical cows), as well as planetary signals (as
unidimensional objects, or sometimes quasi-multidimensional objects). The
discovery of small and cool planets has lead to analyze planetary signals well
below the designed photometric precision of current instrumentation. The
challenge is up there, and keep us busy, so all is well. Here we present yet
another open-source tool to analyze exoplanet data of time-series observations.
The {\puppies} code is available via PyPI (\texttt{pip install exo-puppies})
and conda, the documentation is located at https://puppies.rtfd.io
- Circular reasoning: Solving the Hubble tension with a non-$π$ value of
$π$
2403.20219 [abs] [pdf]
[abstract]
by Jonas El Gammal, [and 3 more]Sven Günther, Emil Brinch Holm, and Andreas Nygaard [hide authors].
Recently, cosmology has seen a surge in alternative models that purport to
solve the discrepancy between the values of the Hubble constant $H_0$ as
measured by cosmological microwave background anisotropies and local
supernovae, respectively. In particular, many of the most successful approaches
have involved varying fundamental constants, such as an alternative value of
the fine structure constant and time-varying values of the electron mass, the
latter of which showed particular promise as the strongest candidate in several
earlier studies. Inspired by these approaches, in this paper, we investigate a
cosmological model where the value of the geometric constant $\pi$ is taken to
be a free model parameter. Using the latest CMB data from Planck as well as
baryon-acoustic oscillation data, we constrain the parameters of the model and
find a strong correlation between $\pi$ and $H_0$, with the final constraint
$H_0 = 71.3 \pm 1.1 \ \mathrm{ km/s/Mpc}$, equivalent to a mere $1.5\sigma$
discrepancy with the value measured by the SH0ES collaboration. Furthermore,
our results show that $\pi = 3.206 \pm 0.038$ at $95 \%$ C.L., which is in good
agreement with several external measurements discussed in the paper. Hence, we
conclude that the $\pi \Lambda$CDM model presented in this paper, which has
only a single extra parameter, currently stands as the perhaps strongest
solution to the Hubble tension.
- Species Syzygy: Which Animal Has Seen the Most Total Solar Eclipses?
2403.20175 [abs] [pdf]
[abstract]
by Mark Popinchalk.
A Total Solar Eclipse (TSE) is a shocking and sublime experience. In just a
week hundreds of millions of Homo Sapiens will attempt to see the 2024 eclipse
as it stretches across the North American continent. However, while Homo
Sapiens may be uniquely positioned to understand and predict eclipses, they are
not the only species capable of observing them. The precise alignment of the
Moon, Earth and Sun all existed well before humans. In the same way we share
this planet capable of hosting life, the fantastic astronomical experiences
available on it are not exclusive either. We present a framework to calculate
the number of Total Solar Eclipses experienced by a species at any point in
Earth's history. This includes factoring in the evolution of the Sun-Moon-Earth
system, the duration the species is extant, and average population. We
normalize over the geographic range by calculating an Astronomical World
Eclipse Surface cOverage MEtric (AWESOME) time. To illustrate this framework we
look at the case study of the family Limulidae (Horseshoe Crabs) and estimate
the number of individuals that have seen an eclipse. We compare it to the
number of current Homo Sapiens that view eclipses, and predict if it is
possible for another species to take the ''top'' spot before the final total
solar eclipse in ~ 380 million years.
- FOOD I: A New Division Scheme For The Stelliferous Era
2403.20144 [abs] [pdf]
[abstract]
by Stephen M. Wilkins, Sophie L. Newman, and Will J. Roper.
In recent years the James Webb Space Telescope has enabled the frontier of
observational galaxy formation to push to ever higher redshift, deep within
cosmic dawn. However, what is high-redshift, and when was cosmic dawn? While
widely used, these terms (as well as many other confusing terms) are not
consistently defined in the literature; this both hampers effective
communication but also impedes our ability to precisely characterize and
understand the phenomena under investigation. In this article we seek to
address this issue of utmost importance. We begin by definitively defining
terms such as ``high-redshift'', ``cosmic dawn'', etc. However, despite the
rigorous definitions for them we present, both the adjective-based redshift and
diurnal marker (time-of-day) division schemes suffer from issues including not
being sufficiently granular, angering cosmologists, being arbitrary, and having
a geocentric bias. To overcome these we introduce the \textit{redshiFt epOchs
fOr everyboDy} (FOOD) framework, a revolutionary new division scheme based on
eating occasions, i.e. meals.
- Echoes from a long time ago: Chewbacca inflation
2403.20143 [abs] [pdf]
[abstract]
by D. Sidious, [and 11 more]S. Arcari, N. Barbieri, L. Bazzanini, L. Caloni, G. Galloni, R. Impavido, M. Lattanzi, M. Lembo, A. Raffaelli, N. Raffuzzi, and S. S. Sirletti [hide authors].
The cosmic microwave background (CMB) radiation offers a unique avenue for
exploring the early Universe's dynamics and evolution. In this paper, we delve
into the fascinating realm of slow-roll inflation, contextualizing the
primordial acoustic perturbations as the resonant echoes akin to the iconic
sound of Chewbacca from the Star Wars universe. By extrapolating polynomial
potentials for these primordial sounds, we illuminate their role in shaping the
inflationary landscape. Leveraging this framework, we calculate the scalar
spectral index ($n_s$) and tensor-to-scalar ratio ($r$), providing insights
into the underlying physics governing the inflationary epoch. Employing a
rigorous chi-square ($\chi^2$) analysis, we meticulously scrutinize the Planck
data combined with that offered by the BICEP/Keck collaboration to identify the
Chewbacca sound profile that best aligns with observational constraints. Our
findings not only shed light on the intricate interplay between sound and
cosmology but also unveil intriguing parallels between the cosmic symphony of
the early universe and beloved cultural icons.
- Unobserving the Moon: the spurious possibility of orbital decoupling due
to solar neutrino Arago spot
2403.20087 [abs] [pdf]
[abstract]
by Henrik Viitasaari, [and 6 more]Oskari Färdig, Joona H. Siljander, A. Petrus Väisänen, Aapo S. Harju, Antti V. Nurminen, and Jami J. Kinnunen [hide authors].
The Arago spot is an intensity maximum at the center of a shadow created by
constructive interference of diffracted waves around a spherical object. While
the study of diffraction patterns usually concerns visible light, de Broglie's
wave nature of matter makes diffraction theory applicable for particles, such
as neutrinos, as well. During a solar eclipse, some of the neutrinos emitted by
the Sun are diffracted by the Moon, resulting in a diffraction pattern that can
be observed on Earth. In this paper we consider the theoretically emerging
solar neutrino Arago spot as a means to measure the location of the Moon with
high accuracy and consider its implication on the orbit of the Moon given
Heisenberg's uncertainty principle. Our results indicate that the Moon is not
at immediate risk of orbital decoupling due to the observation of a solar
neutrino Arago spot.
- Why FLAMINGO is the perfect name for an array of Cherenkov telescopes
2403.19993 [abs] [pdf]
[abstract]
by P. Flock, [and 8 more]A. Laguna-Salina, F. James, G. Blossom, B. Carotene, C. Sparks, D. Tarek, A. Ahashia, and J. Donald [hide authors].
This paper argues why FLAMINGO (Fast Light Atmospheric Monitoring and Imaging
Novel Gamma-ray Observatory) is the perfect name for an array of
very-high-energy Cherenkov telescopes. Studies which indicate pink is the most
suitable pigment for the structures of Cherenkov telescopes have passed with
flying colors. Pink optimizes the absorption and reflectivity properties of the
telescopes with respect to the characteristic blue color of the Cherenkov
radiation emitted by high-energy particles in the atmosphere. In addition to
giving the sensitivity a big leg up, a pink color scheme also adds a unique and
visually appealing aspect to the project's branding and outreach efforts.
FLAMINGO has a fun and memorable quality that can help to increase public
engagement and interest in astrophysics and also help to promote diversity in
the field with its colorful nature. In an era of increasingly unpronounceable
scientific acronyms, we are putting our foot down. FLAMINGO is particularly
fitting, as flamingos have eyesight optimized to detect small particles,
aligning with the primary purpose of Cherenkov telescopes to detect faint
signals from air showers. We should not wait in the wings just wishing for new
name to come along: in FLAMINGO we have an acronym that both accurately
reflects the science behind Cherenkov telescopes and provides a visually
striking identity for the project. While such a sea change will be no easy
feet, we are glad to stick our necks out and try: FLAMINGO captures the essence
of what an array of Cherenkov telescopes represents and can help to promote the
science to a wider audience. We aim to create an experiment and brand that
people from all walks of life will flock to.
- Is Winter Coming?
2403.19977 [abs] [pdf]
[abstract]
by A. Winter, [and 3 more]A. Winter, A. Winter, and A. Winter [hide authors].
We critically examine the often-made observation that "quantum winter [or
some other winter] is coming", and the related admonition to prepare for this
or that winter, inevitably bound to arrive. What we find based on even the most
superficial look at the available evidence is that such statements not only are
overblown hype, but are also factually wrong: Winter is here, and the real
question is rather for how long it/they will stay.
- Deeper Learning in Astronomy
2403.19937 [abs] [pdf]
[abstract]
by Douglas Scott and Ali Frolop.
It is well known that the best way to understand astronomical data is through
machine learning, where a "black box" is set up, inside which a kind of
artificial intelligence learns how to interpret the features in the data. We
suggest that perhaps there may be some merit to a new approach in which humans
are used instead of machines to understand the data. This may even apply to
fields other than astronomy.
- Everything's Fine
2403.19891 [abs] [pdf]
[abstract]
by Eve Armstrong.
I investigate the peculiar situation in which I find myself healthy and
strong, with a darling family, stimulating job, top-notch dental plan, and
living far from active war and wildfire zones -- yet perpetually ill at ease
and prone to sudden-onset exasperation when absolutely nothing has happened. My
triggers include dinner parties, chairs, therapists, and shopping at Costco. In
analysing this phenomenon, I consider epigenetics, the neuroscience of
neuroticism, and possible environmental factors such as NSF grant budgets. Yet
no obvious solution emerges. Fortunately, my affliction isn't really all that
serious. In fact, it's good writing material. So while I'm open to better
ideas, I figure I'll just continue being like this.
- Multi-Messenger Astrology
2403.19749 [abs] [pdf]
[abstract]
by Gwen Walker, [and 3 more]Nick Ekanger, R. Andrew Gustafson, and Sean Heston [hide authors].
It has long been accepted that the cosmos determine our personalities,
relationships, and even our fate. Unlike our condensed matter colleagues - who
regularly use quantum mechanics to determine the healing properties of crystals
- astrology techniques have been unchanged since the 19th century. In this
paper, we discuss how astrophysical messengers beyond starlight can be used to
predict the future and excuse an $\mathcal{O}(1)$ fraction of our negative
personality traits.
2023
- The most fundamental question of all times
2304.01011 [abs] [pdf]
[abstract]
by Ste Berta, [and 3 more]Avril de Poisson, Kriemhild von Scherz, and Saul Fools [hide authors].
In the last few decades, reading the literature, we realized that we
Astronomers have a strong preference to undertake very ambitious projects, and
search for answers to the most fundamental questions in the history of the
entire Universe. After running multiple times into such cardinal quest, the
curiosity became no more sustainable and we had to find out. To our greater
surprise, in the last few decades we had been restlessly participating to this
superhuman endevour. Therefore we hereby explore the roots and grounds of this
fundamental search, through the past decades, centuries and millennia.
- Predictive power of daily viscacha and vicuña sightings on Simons
Array site work results
2304.00351 [abs] [pdf]
[abstract]
by Praween Siritanasak, [and 4 more]Ian Birdwell, Lindsay Lowry, Felipe Lucero, and Macaroni Kijsanayotin [hide authors].
We studied the predictive power of daily animal sightings on site work
outcomes at the Polarbear and Simons Array experiment site in the Atacama
Desert, Chile. Specifically, we observed the number of viscacha and vicuna
sightings during a two-month period, totaling 31 observation days, and analyzed
their relationship with site work outcomes using machine learning techniques.
Our results show that there was no significant correlation between the number
of animal sightings and site work outcomes. The feather importance score for
viscacha and vicuna were 0.71068 and 0.057762, respectively. Future research
may include expanding the analysis to include other animal species,
investigating the impact of human activity on site work outcomes, and exploring
alternative machine learning models or statistical techniques.
- Spontaneous Human Combustion rules out all standard candidates for Dark
Matter
2304.00319 [abs] [pdf]
[abstract]
by Frederic V. Hessman and J. Craig Wheeler.
We argue that the reported cases of Spontaneous Human Combustion (SHC) are
most likely due to the impact of the human body with an extremely high energy
particle like cosmic rays or Dark Matter. Normal and antimatter cosmic rays and
classical weakly-interacting massive particles (WIMPs) with energies of GeV to
ZeV can be easily ruled out due to their inability to dump enough energy into a
small region of human tissue, leaving as the single remaining candidate massive
Dark Matter particles. While primordial Black Holes would appear to be very
good candidates for inducing the SHC phenomenon, we show that the estimated
local Dark Matter density requires that the particles have masses of $\sim
10$\,kg, clearly ruling out this candidate. All of the other classic DM
candidates -- from scalar and pseudo-scalar spin 1/2 and spin 2 gauge singlets
to nuclearitic strange quark ``bowling balls'' -- can be ruled out. Axions
tailored to solve the CP-problem also cannot be invoked, no matter what mass is
considered. The only particles left are massive mega-axions (MaMAs), for which
there are an infinite number of possible string models.
- MO0NFALL: The Great Filter and Exo-Moon Occurrence
2303.18227 [abs] [pdf]
[abstract]
by Casey Brinkman, [and 5 more]Keyan Gootkin, Rena A. Lee, Grey Murphree, Nick Saunders, and Linnea Wolniewicz [hide authors].
We observe neither life beyond Earth, nor moons around exoplanets, despite
the prevalence of Earth-like planets across the galaxy. We suggest Moonfall as
a possible mechanism to explain both simultaneously.
- A Unified Nomenclature and Taxonomy for Planets, Stars, and Moons
2303.18217 [abs] [pdf]
[abstract]
by Jason T. Wright.
I solve the problem of nomenclature of planets, stars, and moons, and in
doing so repair two of the IAU's blunders. Drawing and improving upon
foundational work by Chen & Kipping, I describe a single, physics-based
taxonomy that christens all objects in hydrostatic equilibrium as "stars," a
category that contains several subcategories based on the relevant pressure
terms in the equation of state. I also acknowledge dynamical considerations,
which allow me to describe a single designation scheme for all "stars"
following the Washington Multiplicity Catalog convention. Under this unified
scheme, what we used to call "Planet Earth" is now the moon rock "star" Sun Da.
- Can AI Put Gamma-Ray Astrophysicists Out of a Job?
2303.17853 [abs] [pdf]
[abstract]
by Samuel T. Spencer, Vikas Joshi, and Alison M. W. Mitchell.
In what will likely be a litany of generative-model-themed arXiv submissions
celebrating April the 1st, we evaluate the capacity of state-of-the-art
transformer models to create a paper detailing the detection of a Pulsar Wind
Nebula with a non-existent Imaging Atmospheric Cherenkov Telescope (IACT)
Array. We do this to evaluate the ability of such models to interpret
astronomical observations and sources based on language information alone, and
to assess potential means by which fraudulently generated scientific papers
could be identified during peer review (given that reliable generative model
watermarking has yet to be deployed for these tools). We conclude that our jobs
as astronomers are safe for the time being. From this point on, prompts given
to ChatGPT and Stable Diffusion are shown in orange, text generated by ChatGPT
is shown in black, whereas analysis by the (human) authors is in blue.
- Party Planning the Next True Happy New Year: Lunar Orbital Evolution
Epochs with Integer Synodic Months Per Year
2303.17697 [abs] [pdf]
[abstract]
by Mark Popinchalk.
Humans like to party, and New Year celebrations are a great way to do that.
However New Years celebrations that rely on an orbital year don't line up with
those that use a Lunar Calendar, as there are currently 12.368 synodic months
(moonths) in a year. There is cyclostratigraphic, paleontological, and tidal
rhythmite data that reveal that over billions of years the interplay of angular
momentum between the Sun, Earth and Moon has changed the rate of rotation of
Earth, and at the same time evolved the orbit of the Moon, and therefore the
length of a Lunar month. Using a subset of this data and referencing literature
models of the Moon's orbital evolution, we create our own simple model to
determine "True Happy New Years", time periods when there were an integer
number of lunar synodic months in an Earth orbital year. This would allow
modern calendars to pick a shared New Year's Day, and party accordingly. We
then predict the next True Happy New Year to be in 252 million years, and offer
suggestions to begin the party planning process early, so that we as a planet
may be ready.
- Trustworthy de Sitter compactifications of string theory: a
comprehensive review
2303.17680 [abs] [pdf]
[abstract]
by Iosif Bena, Mariana Graña, and Thomas Van Riet.
We attempt to review all trustworthy and well-controlled de Sitter
compactifications of string theory.
- ChatGPT scores a bad birdie in counting gravitational-wave chirps
2303.17628 [abs] [pdf]
[abstract]
by Floor S. Broekgaarden.
How many gravitational-wave observations from compact object mergers have we
seen to date? This seemingly simple question has a surprisingly complex answer
that even ChatGPT struggles to answer. To shed light on this, we present a
database with the literature's answers to this question. We find values
spanning 67-100 for the number of detections from double compact object mergers
to date, emphasizing that the exact number of detections is uncertain and
depends on the chosen data analysis pipeline and underlying assumptions. We
also review the number of gravitational-wave detections expected in the coming
decades with future observing runs, finding values up to millions of detections
per year in the era of Cosmic Explorer and Einstein Telescope. We present a
publicly available code to visualize the detection numbers, highlighting the
exponential growth in gravitational-wave observations in the coming decades and
the exciting prospects of gravitational-wave astrophysics. See
http://www.broekgaarden.nl/floor/wordpress/elementor-967/. We plan to keep this
database up-to-date and welcome comments and suggestions for additional
references.
- Nuggets of Wisdom: Determining an Upper Limit on the Number Density of
Chickens in the Universe
2303.17626 [abs] [pdf]
[abstract]
by Rachel Losacco and Zachary Claytor.
The lower limit on the chicken density function (CDF) of the observable
Universe was recently determined to be approximately 10$^{-21}$ chickens
pc$^{-3}$. For over a year, however, the scientific community has struggled to
determine the upper limit to the CDF. Here we aim to determine a reasonable
upper limit to the CDF using multiple observational constraints. We take a
holistic approach to considering the effects of a high CDF in various domains,
including the Solar System, interstellar medium, and effects on the cosmic
microwave background. We find the most restrictive upper limit from the domains
considered to be 10$^{23}$ pc$^{-3}$, which ruffles the feathers of
long-standing astrophysics theory.
- I Murdered Conan O'Brien and Nobody Will Ever Know -- an exercise in
inference sabotage
2303.17400 [abs] [pdf]
[abstract]
by Eve Armstrong.
I employ an optimization-based inference methodology together with an Ising
model, in an intentionally ineffectual manner, to get away with murdering an
obstreperous scientific collaborator. The antics of this collaborator,
hereafter "Conan O'Brien," were impeding the publication of an important
manuscript. With my tenure date looming, I found myself desperate. Luckily, I
study inference, a computational means to find a solution to a physical
problem, based on available measurements (say, a dead body) and a dynamical
model assumed to give rise to those measurements (a murderer). If the
measurements are insufficient and/or the model is incomplete, one obtains
multiple "degenerate" solutions to the problem. Degenerate solutions are all
equally valid given the information available, and thus render meaningless the
notion of one "correct" solution. Typically in scientific research, degeneracy
is undesirable. Here I describe the opposite situation: a quest to create
degenerate solutions in which to cloak myself. Or even better: to render
measurements incompatible with a solution in which I am the murderer. Moreover,
I show how one may sabotage an inference procedure to commit an untraceable
crime. I sit here now, typing victoriously, a free woman. Because you won't
believe me anyway. And even if you do, you'll never prove a thing.
- As a matter of colon: I am NOT digging cheeky titles (no, but actually
yes :>)
2303.17059 [abs] [pdf]
[abstract]
by Joanne Tan and Tie Sien Suk.
What's in a name, a poet once asked. To which we present this work, where we
investigate the importance of a paper title in ensuring its best outcome. We
queried astronomy papers using NASA ADS and ranked 6000 of them in terms of
cheekiness level. We investigate the correlation between citation counts and
(i) the presence of a colon, and (ii) cheekiness ranking. We conclude that
colon matters in the anatomy of a paper title. So does trying to be cheeky, but
we find that too much cheekiness can lead to cringefests. Striking the right
balance is therefore crucial. May we recommend aiming for a level 4 cheekiness
on a scale of 1-5.
- On The Planetary Theory of Everything
2303.17035 [abs] [pdf]
[abstract]
by J. J. Charfman Jr., [and 4 more]M. M. M., J. Dietrich, N. T. Schragal, and A. M. Avsar [hide authors].
Here, we present a simple solution to problems that have plagued
(extra)"galactic" astronomers and cosmologists over the last century. We show
that "galaxy" formation, dark matter, and the tension in the expansion of the
universe can all be explained by the natural behaviors of an overwhelmingly
large population of exoplanets throughout the universe. Some of these ideas
have started to be proposed in the literature, and we commend these pioneers
revolutionizing our understanding of astrophysics. Furthermore, we assert that,
since planets are obviously the ubiquitous answer to every current question
that can be posed by astronomers, planetary science must then be the basis for
all science, and therefore that all current funding for science be reserved for
(exo)planetary science - we happily welcome all astronomers and other
scientists.
- When Tails Tell Tales
2303.16941 [abs] [pdf]
[abstract]
by Henri M. J. Boffin.
The enigmatic open clusters serve as a constant reminder of the mysteries of
the universe, helping to confront astronomical theories. Unknown to many, these
clusters often possess tails with inappropriate labels, serving as the
tell-tale signs of their historical journey. But unlike typical tails, these
extensions can either precede or follow the body, yet they consistently unfold
a cosmic mystery to be solved. I present a succinct survey of this subject
matter, detailing the intrepid efforts of astronomers who have dared to
challenge our knowledge about these creatures, and offer a novel proposal for
their nomenclature, while not disregarding the philosophical ramifications.
- A Modest Proposal for the Non-existence of Exoplanets: The Expansion of
Stellar Physics to Include Squars
2303.16915 [abs] [pdf]
[abstract]
by Charity Woodrum, [and 3 more]Raphael E. Hviding, Rachael C. Amaro, and Katie Chamberlain [hide authors].
The search for exoplanets has become a focal point of astronomical research,
captivating public attention and driving scientific inquiry; however, the rush
to confirm exoplanet discoveries has often overlooked potential alternative
explanations leading to a scientific consensus that is overly reliant on
untested assumptions and limited data. We argue that the evidence in support of
exoplanet observation is not necessarily definitive and that alternative
interpretations are not only possible, but necessary. Our conclusion is
therefore concise: exoplanets do not exist. Here, we present the framework for
a novel type of cuboid star, or squar, which can precisely reproduce the full
range of observed phenomena in stellar light curves, including the trapezoidal
flux deviations (TFDs) often attributed to "exoplanets." In this discovery
paper, we illustrate the power of the squellar model, showing that the light
curve of the well-studied "exoplanet" WASP-12b can be reconstructed simply from
a rotating squar with proportions $1:1/8:1$, without invoking ad-hoc planetary
bodies. Our findings cast serious doubt on the validity of current
"exoplanetary" efforts, which have largely ignored the potential role of squars
and have instead blindly accepted the exoplanet hypothesis without sufficient
critical scrutiny. In addition, we discuss the sociopolitical role of climate
change in spurring the current exoplanet fervor which has lead to the
speculative state of "exoplanetary science" today. We strongly urge the
astronomical community to take our model proposal seriously and treat its
severe ramifications with the utmost urgency to restore rationality to the
field of astronomy.
2022
- First Detections of Exop(lan)ets: Observations and Follow-Ups of the
Floofiest Transits on Zoom
2203.17185 [abs] [pdf]
[abstract]
by Sabina Sagynbayeva, [and 18 more]Briley L. Lewis, Graham M. Doskoch, Ali Crisp, Catherine A. Clark, Katya Gozman, Gourav Khullar, Haley Wahl, Jenny K. Calahan, Mark Popinchalk, Samuel Factor, Macy Huston, Pratik Gandhi, Isabella Trierweiler, Suchitra Narayanan, Jonathan Brande, Michael M. Foley, Olivia R. Cooper, and Ben Cassese [hide authors].
With the proliferation of online Zoom meetings as a means of doing science in
the 2020s, astronomers have made new and unexpected Target of Opportunity (ToO)
observations. Chief among these ToOs are observations of exop(lan)ets, or
"exopets." Building on the work of Mayorga et al. (2021) - whose work
characterized the rotational variations of "floofy" objects - we model exopets
using methods similar to those used for exoplanetary transits. We present data
collected for such exopet Zoom transits through a citizen science program in
the month of February 2022. The dataset includes parameters like exopet color,
floofiness, transit duration, and percentage of Zoom screen covered during the
event. For some targets, we also present microlensing and direct imaging data.
Using results from our modelling of 62 exopet observations as transits,
microlensing, and direct imaging events, we discuss our inferences of exopet
characteristics like their masses, sizes, orbits, colors, and floofiness.
- Follow the Index: A new proposal
2203.17123 [abs] [pdf]
[abstract]
by Henri M. J. Boffin.
Despite all its well-known flaws and calls for its dismissal, the notorious
$h$-index is still used in many instances when awarding grants, or promoting
and hiring scientists. To address this, I set out to devise a better index,
with the twofold aim of taking into account the authors' respective
contributions and considerably reducing the pollution of the scientific
literature. Finally, I present a strategy that is guaranteed to be best for all
researchers.
- The Three Little Pigs and the Big Bad Wolf: Case Studies of Peer Review
2203.17095 [abs] [pdf]
[abstract]
by Eve Armstrong.
I present for your appraisal three independent cases of the manuscript
referee process conducted by a venerable peer-reviewed scientific journal. Each
case involves a little pig, who submitted for consideration a theoretical plan
for a house to be constructed presently, in a faraway land. An anonymous big
bad wolf was assigned by the journal to assess the merit of these manuscripts.
The pigs proposed three distinct construction frameworks, which varied in
physical and mathematical sophistication. The first little pig submitted a
model of straw, based on the numerical method of toe-counting. His design
included odd features, such as spilled millet and cloven-hoofprints on the
window sill -- possibly a ploy to distract the wolf from the manuscript's
facile mathematical foundation. The second little pig used a more advanced
approach, employing Newton's classical laws of motion, to propose a house of
sticks. This pig included in her manuscript copious citations by a specific
wolf, possibly aiming to ensure acceptance by flattering the wolf whom she
anticipated would be the referee. The third little pig described an
ostentatious house of bricks based on an elaborate dynamical systems and
stability analysis, possibly scheming to dazzle and impress. The big bad wolf
did not appear moved by any of the pigs' tactics. His recommendations were, for
straw: the minor revision of water-proofing; for sticks: the major revision of
fire-proofing, given concerns surrounding climate change; for bricks:
unequivocal rejection, accompanied by multiple derogatory comments regarding
"high-and-mighty theorists." I describe each case in detail, and suggest that
the wolf's reports might be driven as much by self interest as the manuscripts
themselves -- namely, that at the time the wolf wrote the reviews, he was
rather hungry. Finally, I examine morals learned, if any.
- On the Possibility of Discovering Exoplanets within our Solar System
2203.17075 [abs] [pdf]
[abstract]
by John A Paice and Jack J|C Watkins.
It has previously been suggested that the rate of exoplanet discovery,
doubling roughly every 39 months, is indicative of a runaway increase in the
number of exoplanets in our galaxy. In this paper, we posit that - due to the
finite nature of space in the milky way - it will become increasingly likely
that one of these exoplanets will be found within our solar system. We
calculate the odds of this occurring pass 50\% on Friday 9th December 2146. We
go on to suggest novel methods for influencing where this exoplanet may be
discovered, note possible drawbacks of the discovery, and finally explore how
the previously-hypothesized `exoplanet singularity' (both figurative and
literal) could be averted.
- Group draw with unknown qualified teams: A lesson from the 2022 FIFA
World Cup draw
2203.17048 [abs] [pdf]
[abstract]
by László Csató.
The draw for the 2022 FIFA World Cup has been organised before the identity
of three winners of the play-offs is revealed. Seeding has been based on the
FIFA World Ranking released on 31 March 2022 but these three teams have been
drawn from the weakest Pot 4. We show that the official seeding policy does not
balance the difficulty levels of the groups to the extent possible: a better
alternative would have been to assign the placeholders according to the
highest-ranked potential winner, similar to the rule used in the UEFA Champions
League qualification. Our simulations reinforce that this is the best strategy
in general to create balanced groups in the FIFA World Cup.
- Transmogrifiers: Bright of the Exomoon
2203.17017 [abs] [pdf]
[abstract]
by Michael B. Lund.
Though it may be a behavior that has been observed and documented for
millennia, and despite the connection between it and the full moon, the
astronomical community has afforded very little attention to lycanthropy. We
hope to address this deficiency by using the population of known exoplanets as
a natural experiment to better characterize what properties of the moon are
necessary to trigger a transformation into a werewolf. We additionally
investigate which exoplanets are most likely to have exomoons which may cause
werewolves, with a particular focus on LHS 1140 b. We also propose a new
mission called the Werewolves From Infrared Radiation and Spectral-typing
Telescope, or WFIRST, in order to better characterize exoplanetary systems.
This will allow us to explore the impact of stellar type on lycanthropy more
than it has traditionally been considered. We believe this represents a major
step forward in our understanding and recognition of the burgeoning field of
exocryptozoology.
- Social distancing between particles and objects in the Universe
2203.16982 [abs] [pdf]
[abstract]
by Door van Flonkelaar, [and 4 more]Bozef Jucko, Gudit Marg, Koah Nubli, and Schebastian Sulz [hide authors].
The novel coronavirus, dubbed COVID-19, upended our lives may be in
irreversible ways during its initial spread throughout the world in March 2020.
It forced us all, willingly or unwillingly, to keep social distance from each
other to slow down the spread of COVID-19. As scientists, we started
speculating what kind of separation is between the constitutes of different
objects in the Universe. In this work, we study the "social" distance between
elements inside various objects, no matter their size, mass, and nature. We
consider things ranging from diamond, baseball to Saturn, asteroid belt or M87
Black Hole, to name a few. We show our results in the form of a fascinating
mass/"social" distance plot, where a cool cartoon figure represents each
object.
- The Parking Lot Planet
2203.16791 [abs] [pdf]
[abstract]
by Sergio Best, Fernanda Correa, and Juan Ignacio Espinoza.
We give conditions for an exoplanetary system to function as an ideal
amusement park/vacation resort (with its separate parking lot, of course); in
case of massive human interplanetary colonization. Our considerations stem from
the fact that an amusement park needs a parking lot of roughly the same surface
area, thus the best option for its construction would be a system with at least
2 planets close to each other for easy tourist transportation. We also discuss
the likelihood of finding such a system out there to cut down on construction
costs.
- Predicting Winners of the Reality TV Dating Show $\textit{The Bachelor}$
Using Machine Learning Algorithms
2203.16648 [abs] [pdf]
[abstract]
by Abigail J. Lee, [and 5 more]Grace E. Chesmore, Kyle A. Rocha, Amanda Farah, Maryum Sayeed, and Justin Myles [hide authors].
$\textit{The Bachelor}$ is a reality TV dating show in which a single
bachelor selects his wife from a pool of approximately 30 female contestants
over eight weeks of filming (American Broadcasting Company 2002). We collected
the following data on all 422 contestants that participated in seasons 11
through 25: their Age, Hometown, Career, Race, Week they got their first 1-on-1
date, whether they got the first impression rose, and what "place" they ended
up getting. We then trained three machine learning models to predict the ideal
characteristics of a successful contestant on $\textit{The Bachelor}$. The
three algorithms that we tested were: random forest classification, neural
networks, and linear regression. We found consistency across all three models,
although the neural network performed the best overall. Our models found that a
woman has the highest probability of progressing far on $\textit{The Bachelor}$
if she is: 26 years old, white, from the Northwest, works as an dancer,
received a 1-on-1 in week 6, and did not receive the First Impression Rose. Our
methodology is broadly applicable to all romantic reality television, and our
results will inform future $\textit{The Bachelor}$ production and contestant
strategies. While our models were relatively successful, we still encountered
high misclassification rates. This may be because: (1) Our training dataset had
fewer than 400 points or (2) Our models were too simple to parameterize the
complex romantic connections contestants forge over the course of a season.
- The popular myth of the drunk fireworks in the Valencian Fallas: "If you
run, it chases you"
2203.16630 [abs] [pdf]
[abstract]
by Eloy Peña-Asensio.
There is a popular myth transferred from generation to generation related to
the festivity of the Valencian Fallas. During these days, it is traditional to
throw pyrotechnic devices of all kinds. There is a legend about the so-called
drunk fireworks, small rockets that move randomly at high speed. According to
folk wisdom, if you try to run away from a drunk firework, it will chase you
until it hits you. It is performed a Monte Carlo simulation without considering
aerodynamic effects to see if there is indeed a greater chance of a person
being hit when moving. The results indicate that the popular myth is correct,
at least in terms of having a higher probability of impact. Once again, it is
demonstrated that popular myths can be a source of valuable knowledge beyond
formal science.
- Taurine in Taurus. An Over-Caffeinated Search for Coffee in Space
2203.16598 [abs] [pdf]
[abstract]
by Christian Eistrup, [and 5 more]Łukasz A. Tychoniec, Iris Nijman, Marta Paula Tychoniec, Siroon Bekkering, and Anna Gaca [hide authors].
Caffeination can open tired eyes and enhance focus. Over-caffeination,
furthermore, can lead to errors but also to unexpected discoveries that might
not have happened without 30 hours of sleep deprivation and 500mg of caffeine
in our bodies. This paper presents exactly such a discovery. Upon much staring
into our coffee cups, empty anew, the thought struck us: coffee in space.
Caffeine may not be the only key. HL Tau, Taurus, bull... Taurine! We grinded
some red bourbon for a new pour-over, and developed the new,
coffee-groundsbreaking Large Astrocomical Taurine Tester Experiment (LATTE) in
just 1/4 of a day. We felt bull-ish about our chances of making a great
discovery! We installed LATTE, aimed it at the well-known young star HL Tau,
and there it was: an abundance of taurine gas beautifully outlining a cup of
cosmic flat white, with the ring structure of HL Tau turning out to be latte
art performed by a skillful cosmic barista. The first Robusta discovery of
coffee in space. Speaking of coffee, we hope you have a nice hot cup with you,
and we encourage you to pun-tinue all the way to the end of this bean-grinding
paper.
- What's for Lunch? A systematic ordering of foods in the
Soup-Salad-Sandwich phase space
2203.16580 [abs] [pdf]
[abstract]
by Madelyn Leembruggen and Caroline Martin.
The statistical physics of phase transitions has been hugely successful at
describing numerous natural, physical, and technological phenomena, and now a
rigorous examination of the phase space of the culinary regime is likewise ripe
for the picking. Despite great demand for the resolution of many scientific
debates over the taxonomy of food, past attempts have failed to account for
complex phase behavior and co-existence, and have thus left the public hungry
for a more substantial theory. By applying the principles of statistical
physics and thermodynamics, we here map out the complete phase space of all
culinary dishes and find three distinct phase regimes: Soup, Salad, and
Sandwich. We consider the effect of different state variables on these phase
boundaries, as well as regions of co-existence and triple points. With this
complete 3-dimensional phase diagram of all foods, we can conclusively answer
many bitter debates, including the imperishable question "is a hotdog a
sandwich?" The answer: yes.
- Could fresh lava be (warm) dark matter?
2203.16563 [abs] [pdf]
[abstract]
by Mark R. Lovell.
Dark matter models can be classified according to their impact on the
properties of galaxies, including cold dark matter (CDM), warm dark matter
(WDM), self-interacting dark matter (SIDM) and fuzzy dark matter (FDM). In
celebration of April Fool's Day, and also of the 1-year anniversary of the
start of the 2022 volcanic eruption at Fagradalsfjall here in Iceland, we
explore fresh lava as a candidate for WDM specifically. We verify first hand
that lava is indeed warm (exhibits free-streaming and retains temperature for
several months after the eruption ends, is 1000K, sets fire to grass, can feel
one's eyebrows singe at a distance of 4m) and dark once sufficiently decoupled
from its source of production.
- Worry No More, The Hubble Tension is Relieved: A Truly Direct
Measurement of the Hubble Constant from Mooniversal Expansion
2203.16551 [abs] [pdf]
[abstract]
by Gagandeep S. Anand, Zachary R. Claytor, and Ryan Dungee.
Using sedimentary and eclipse-based measurements of the lunar recession
velocity, we derive a new local-Universe measurement of the Hubble constant
($H_0$) from the recession rate of Earth's Moon. Taking into account the
effects of tides, we find a value of $H_{0}$ = 63.01 $\pm$ 1.79 km s$^{-1}$
Mpc$^{-1}$, which is in approximate agreement with the Planck space mission's
measurement using the cosmic microwave background (CMB) and base $\Lambda$CDM.
Our new measurement represents the first ever model-independent, single-step
measurement of the Universe's current expansion rate. This is also the first
major local Universe measurement of $H_0$ which is below the measurement from
Planck. Importantly, it is robust to the systematic errors that may be present
in other $H_0$ measurements using other cosmological probes such as type Ia
supernovae, baryon acoustic oscillations, or lensed quasars. Our work provides
key evidence towards the notion that the existing Hubble tension may indeed be
a result of systematic uncertainties in the local distance ladder.
- "My Rhodopsin!": Why Adding Dark Mode to Journals Could Make Us All
Better Astronomers
2203.16546 [abs] [pdf]
[abstract]
by Kyle A. Corcoran and Ellorie M. Corcoran.
The digital age has sparked a revival in the use of "dark mode" (DM) design
in many everyday applications as well as text editors and integrated developer
environments. We present the case for adding a DM theme to astronomical
journals, including a modified class file that generates the theme you see here
as a potential option. DM themes have many beneficial attributes to a user such
as saving battery power and reducing screen burn-in on devices with OLED
screens, increasing figure hopping efficiency, pairing well with
colorblind-friendly palettes, and limiting rhodopsin loss while observing. We
analyzed iPoster design trends from AAS 237 and 238 to gauge the possible
reception of our DM theme, and we estimate that at least 35%, but likely closer
to 42%, of the community would welcome this addition to journals. There are
some drawbacks to using a DM theme when reading papers, including increased ink
usage when reading in a print medium and some diminished legibility and
comprehension in low-light conditions. While these issues are not negligible,
we believe they can be mitigated, especially with a paired submission of both a
DM and traditional, "light mode" manuscript. It is also likely that many of us
will become better astronomers as a result of adding DM to journals.
2021
- The Swapland
2103.17198 [abs] [pdf]
[abstract]
by Prateek Agrawal, [and 8 more]Hengameh Bagherian, Cari Cesarotti, Nicholas DePorzio, Qianshu Lu, Julian B. Muñoz, Aditya Parikh, Matthew Reece, and Weishuang Linda Xu [hide authors].
All the news that's (un)fit to publish.
- The Existential Threat of Future Exoplanet Discoveries
2103.17079 [abs] [pdf]
[abstract]
by Michael B. Lund.
The last 25 years have been revolutionary in astronomy, as the field of
exoplanets has gone from no known planets outside the Solar System to thousands
discovered over the last year few years. This represents a rapid increase not
just in known planets (often referred to as Mamajek's Law), but also in total
planetary mass. What has been heretofore unaddressed, however, is that this
rapid increase in planetary masses may have disastrous consequences for the
future of humanity. We look at how the number of planets, and more importantly,
the mass of these planets has changed in the past and how we can expect this to
change in the future. The answers to those questions, and how we respond to
them, will determine if humanity is able to survive beyond the next 230 years.
- My cat Chester's dynamical systems analysyyyyy7777777777777777y7is of
the laser pointer and the red dot on the wall: correlation, causation, or
SARS-Cov-2 hallucination?
2103.17058 [abs] [pdf]
[abstract]
by Eve Armstrong and Chester.
My cat Chester investigates the elusive relationship between the appearance
in my hand of a silver laser pointer and that of a red dot on the wall, or on
the floor, or on any other object that resides within the vicinity of the laser
pointer. Chester first assesses preliminary establishments for causality,
including mutual information, temporal precedence, and control for third
variables. These assessments are all inconclusive for various reasons. In
particular, mutual information fails to illuminate the problem due to a dearth
of information regarding what the laser pointer might have been doing at times
following Chester's first awareness of the dot. Next Chester performs a formal
reconstruction of phase space via time-delay embedding, to unfold the
gggggggggggfffgfgtredvteometry
,mmmm.........,.,,......,.mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm of the
underlying dynamical system giving rise to the red dot's trajectory. The
resulting attractor does not resemble a laser pointer. The reconstruction
could, however, be flawed, for example, due to the short temporal duration of
the dot's observed trajectory. Finally, the red dot could be a hallucination: a
symptom brought on by COVID-19 - because, well, these days pretty much anything
might be a symptom brought on by COVID-19. On this note, Chester's kitten
brother Mad Dog Lapynski offers an independent check on the red dot's
existence. Moreover, the results of this study are inconclusive and
ca[pokilki[[[[[ll for follow-up.
- The secret of the elixir of youth of blue straggler stars
2103.16866 [abs] [pdf]
[abstract]
by Henri M. J. Boffin.
Using Gaia EDR3, we study the most spectacular and photogenic cluster of
Ptolemy. After deriving its membership, we identify in its colour-magnitude
diagram a star that definitively decided to straggle and dress in blue. Further
analysis with the FARCE telescope allows us to discover in its light curve the
secret of its rejuvenation, which we gladly share in this paper. This research
is an important contribution to attain the ultimate goal of astronomy as
professed by DJ Format.
- I Knew You Were Trouble: Emotional Trends in the Repertoire of Taylor
Swift
2103.16737 [abs] [pdf]
[abstract]
by Megan Mansfield and Darryl Seligman.
As a modern musician and cultural icon, Taylor Swift has earned worldwide
acclaim via pieces which predominantly draw upon the complex dynamics of
personal and interpersonal experiences. Here we show, for the first time, how
Swift's lyrical and melodic structure have evolved in their representation of
emotions over a timescale of $\tau\sim14$ yr. Previous progress on this topic
has been challenging based on the sheer volume of the relevant discography, and
that uniquely identifying a song that optimally describes a hypothetical
emotional state represents a multi-dimensional and complex task. To quantify
the emotional state of a song, we separate the criteria into the level of
optimism ($H$) and the strength of commitment to a relationship ($R$), based on
lyrics and chordal tones. We apply these criteria to a set of 149 pieces
spanning almost the entire repertoire. We find an overall trend toward positive
emotions in stronger relationships, with a best-fit linear relationship of
$R=0.642^{+0.086}_{-0.053}H-1.74^{+0.39}_{-0.29}$. We find no significant
trends in mean happiness ($H$) within individual albums over time. The mean
relationship score ($R$) shows trends which we speculate may be due to age and
the global pandemic. We provide tentative indications that partners with blue
eyes and/or bad reputations may lead to overall less positive emotions, while
those with green or indigo-colored eyes may produce more positive emotions and
stronger relationships. However, we stress that these trends are based on small
sample sizes, and more data are necessary to validate them. Finally, we present
the taylorswift python package which can be used to optimize song selection
according to a specific mood.
- Detection of Rotational Variability in Floofy Objects at Optical
Wavelengths
2103.16636 [abs] [pdf]
[abstract]
by L. C. Mayorga, [and 3 more]E. M. May, J. Lustig-Yaeger, and S. E Moran [hide authors].
Phase resolved observations of planetary bodies allow us to understand the
longitudinal and latitudinal variations that make each one unique. Rotational
variations have been detected in several types of astronomical bodies beyond
those of planetary mass, including asteroids, brown dwarfs, and stars.
Unexpected rotational variations, such as those presented in this work, reminds
us that the universe can be complicated, with more mysteries to uncover. In
this work we present evidence for a new class of astronomical objects we
identify as "floofy" with observational distinctions between several sub-types
of these poorly understood objects. Using optical observations contributed by
the community, we have identified rotational variation in several of these
floofy objects, which suggests that they may have strong differences between
their hemispheres, likely caused by differing reflectivity off their surfaces.
Additional sub-types show no rotational variability suggesting a uniform
distribution of reflective elements on the floofy object. While the work here
is a promising step towards the categorization of floofy objects, further
observations with more strictly defined limits on background light,
illumination angles, and companion objects are necessary to develop a better
understanding of the many remaining mysteries of these astronomical objects.
- The Swampland Conjecture Bound Conjecture
2103.16583 [abs] [pdf]
[abstract]
by William H. Kinney.
I conjecture an upper bound on the number of possible swampland conjectures
by comparing the entropy required by the conjectures themselves to the
Beckenstein-Hawking entropy of the cosmological horizon. Assuming of order 100
kilobits of entropy per conjecture, this places an upper bound of order
$10^{117}$ on the number of conjectures. I estimate the rate of production of
swampland conjectures by the number of papers listed on INSPIRE with the word
"swampland" in the title or abstract, which has been showing approximately
exponential growth since 2014. At the current rate of growth, the entropy bound
on the number of swampland conjectures can be projected to be saturated on a
timescale of order $10^{-8} H_0^{-1}$. I compare the upper bound from the
Swampland Conjecture Bound Conjecture (SCBC) to the estimated number of vacua
in the string landscape. Employing the duality suggested by AdS/CFT between the
quantum complexity of a holographic state and the volume of a Wheeler-Dewitt
spacetime patch, I place a conservative lower bound of order $\mathcal{N}_H >
10^{263}$ on the number of Hubble volumes in the multiverse which must be
driven to heat death to fully explore the string landscape via conjectural
methods.
- Using Artificial Intelligence to Shed Light on the Star of Biscuits: The
Jaffa Cake
2103.16575 [abs] [pdf]
[abstract]
by H. F. Stevance.
Before Brexit, one of the greatest causes of arguments amongst British
families was the question of the nature of Jaffa Cakes. Some argue that their
size and host environment (the biscuit aisle) should make them a biscuit in
their own right. Others consider that their physical properties (e.g. they
harden rather than soften on becoming stale) suggest that they are in fact
cake. In order to finally put this debate to rest, we re-purpose technologies
used to classify transient events. We train two classifiers (a Random Forest
and a Support Vector Machine) on 100 recipes of traditional cakes and biscuits.
Our classifiers have 95 percent and 91 percent accuracy respectively. Finally
we feed two Jaffa Cake recipes to the algorithms and find that Jaffa Cakes are,
without a doubt, cakes. Finally, we suggest a new theory as to why some believe
Jaffa Cakes are biscuits.
- "I'll Finish It This Week" And Other Lies
2103.16574 [abs] [pdf]
[abstract]
by Kaley Brauer.
A small group of postdocs, graduate students, and undergraduates
inadvertently formed a longitudinal study contrasting expected productivity
levels with actual productivity levels. Over the last nine months, our group
self-reported 559 tasks, dates, and completion times -- expected and actual.
Here, I show which types of tasks we are the worst at completing in the
originally planned amount of time (spoiler: coding and writing tasks), whether
more senior researchers have more accurate expectations (spoiler: not much),
and whether our expectations improve with time (spoiler: only a little).
- Dark Matter from Exponential Growth
2103.16572 [abs] [pdf]
[abstract]
by Torsten Bringmann, [and 4 more]Paul Frederik Depta, Marco Hufnagel, Joshua T. Ruderman, and Kai Schmidt-Hoberg [hide authors].
We propose a novel mechanism for the production of dark matter (DM) from a
thermal bath, based on the idea that DM particles $\chi$ can transform heat
bath particles $\psi$: $\chi \psi \rightarrow \chi \chi$. For a small initial
abundance of $\chi$ this leads to an exponential growth of the DM number
density, in close analogy to other familiar exponential growth processes in
nature. We demonstrate that this mechanism complements freeze-in and freeze-out
production in a generic way, opening new parameter space to explain the
observed DM abundance, and we discuss observational prospects for such
scenarios.
2020
- Conspiratorial cosmology. II. The anthropogenic principle
2004.00401 [abs] [pdf]
[abstract]
by Jörg P. Rachen and Ute G. Gahlings.
We revisit our 2013 claim [arXiv:1303.7476] that the Universe is the result
of a conspiratorial plot, and find that it cannot be trusted, because even the
belief in this conspiracy likely results from a conspiracy. On the basis of
mathematical beauty, the final results of the Planck mission, the exploration
of the dark sector by means of occult rituals and symbols, and a powerful new
philosophical approach to physics, we demonstrate here that not only the
existence of our Universe but the whole concept of reality has to be rejected
as obsolete and generally misleading. By introducing the new concept of the
"anthropogenic principle", we eventually illuminate the darkest corners of the
conspiracy behind the conspiracy and briefly discuss some important
implications regarding the survival of wo*mankind.
- Searching for Space Vampires with TEvSS
2003.14345 [abs] [pdf]
[abstract]
by Maximilian N. Günther and David A. Berardo.
It is a truth universally acknowledged, that a single human in possession of
a good space telescope, must be in search of a space vampire. Here, we showcase
our search for transit signatures of tidally locked space vampires, trapped in
the gravitational pull of late M-dwarfs. We generate forward models
representing two potential space vampire populations - those in bat shape and
those in humanoid shape. We search lightcurves from the Transiting Exo-Vampire
Survey Satellite (TEvSS) using a template matching algorithm and fit them using
our allesfitter software. Adding the information gained from TEvSS data, we
greatly decrease the uncertainty for the existence and occurrence rates of
space vampires, and constrain eta(space vampire) to a range of 0% to 100% (or
more). These precise analyses will be crucial for optimizing future observing
schedules for space-vampire characterization with the James Webb Space-Vampire
Telescope (JWSvT) and the Extremely-Large-Vampire Telescopes (ELvTs).
- A PDF PSA, or Never gonna set_xscale again -- guilty feats with
logarithms
2003.14327 [abs] [pdf]
[abstract]
by John C. Forbes.
In the course of doing astronomy, one often encounters plots of densities,
for example probability densities, flux densities, and mass functions. Quite
frequently the ordinate of these diagrams is plotted logarithmically to
accommodate a large dynamic range. In this situation, I argue that it is
critical to adjust the density appropriately, rather than simply setting the
x-scale to `log' in your favorite plotting code. I will demonstrate the basic
issue with a pedagogical example, then mention a few common plots where this
may arise, and finally some possible exceptions to the rule.
- Novel approach to Room Temperature Superconductivity problem
2003.14321 [abs] [pdf]
[abstract]
by Ivan Timokhin and Artem Mishchenko.
A long-standing problem of observing Room Temperature Superconductivity is
finally solved by a novel approach. Instead of increasing the critical
temperature Tc of a superconductor, the temperature of the room was decreased
to an appropriate Tc value. We consider this approach more promising for
obtaining a large number of materials possessing Room Temperature
Superconductivity in the near future.
- An Artificially-intelligent Means to Escape Discreetly from the
Departmental Holiday Party; guide for the socially awkward
2003.14169 [abs] [pdf]
[abstract]
by Eve Armstrong.
We employ simulated annealing to identify the global solution of a dynamical
model, to make a favorable impression upon colleagues at the departmental
holiday party and then exit undetected as soon as possible. The procedure,
Gradual Freeze-out of an Optimal Estimation via Optimization of Parameter
Quantification - GFOOEOPQ, is designed for the socially awkward. The socially
awkward among us possess little instinct for pulling off such a maneuver, and
may benefit from a machine to do it for us. The method rests upon Bayes'
Theorem, where the probability of a future model state depends on current
knowledge of the model. Here, model state vectors are party attendees, and the
future event of interest is their disposition toward us at times following the
party. We want these dispositions to be favorable. To this end, we first
interact so as to make favorable impressions, or at least ensure that these
people remember having seen us there. Then we identify the exit that minimizes
the chance that anyone notes how early we high-tailed it. Now, poorly-resolved
estimates will correspond to degenerate solutions. As noted, we possess no
instinct to identify a global optimum by ourselves. This can have disastrous
consequences. For this reason, GFOOEOPQ employs annealing to iteratively home
in on this optimum. The method is illustrated via a simulated event hosted by
someone in the physics department (I am not sure who), in a two-bedroom
apartment on the fifth floor of an elevator building in Manhattan, with viable
Exit parameters: front door, side door to a stairwell, fire escape, and a
bathroom window that opens onto the fire escape. Preliminary tests are reported
at two real social celebrations. The procedure is generalizable to corporate
events and family gatherings. Readers are encouraged to report novel
applications of GFOOEOPQ, to expand the algorithm.
- The search for life and a new logic
2003.13981 [abs] [pdf]
[abstract]
by Douglas Scott and Ali Frolop.
Exploring the Universe is one of the great unifying themes of humanity. Part
of this endeavour is the search for extraterrestrial life. But how likely is it
that we will find life, or that if we do it will be similar to ourselves? And
therefore how do we know where and how to look? We give examples of the sort of
reasoning that has been used to narrow and focus this search and we argue that
obvious extensions to that logical framework will result in greater success.
- Resolving Exo-Continents with Einstein Ring Deconvolution
2003.13918 [abs] [pdf]
[abstract]
by Alexander Madurowicz.
A mission to the focus of the solar gravitational lens could produce images
with unprecedented angular resolution and sensitivity. In the context of trying
to resolve the time variable thermal signature of continents on other
Earth-like exoplanets, we develop an approach to improve the image
reconstruction performance by using azimuthal variations in the Einstein Ring's
intensity. In the first post-Newtonian approximation to General Relativity, an
arbitrary disk intensity distribution in the source plane is mapped to a narrow
annulus around the Einstein Ring, with each azimuthal element corresponding to
a sector in the disk. A matrix-based linear measurement model at various fixed
signal-to-noise ratios demonstrates that this extra information is useful in
improving the reconstruction when the image is sparsely sampled, which could
improve integration times and temporal errors. Various issues and future
outlooks are discussed.
- Making It Rain: How Giving Me Telescope Time Can Reduce Drought
2003.13879 [abs] [pdf]
[abstract]
by Michael B. Lund.
In this paper we assess the correlation between recent observing runs (2018
and 2019) and inclement weather, and demonstrate that these observing runs have
seen much more rainfall than would otherwise be expected, an increase of over
200%. We further look at a number of observatory sites in areas that are facing
or will face drought, and suggest that a strong environmental benefit would
follow from telescope allocation committees providing us an inordinate amount
of telescope time at facilities located around the globe.
- Defining the Really Habitable Zone
2003.13722 [abs] [pdf]
[abstract]
by Marven F. Pedbost, [and 4 more]Trillean Pomalgu, Chris Lintott, Nora Eisner, and Belinda Nicholson [hide authors].
Since the discovery of the first confirmed exoplanet, observations have
revealed a remarkable diversity of worlds. A wide variety of orbital and
physical characteristics are detected in the exoplanet population, and much
work has been devoted to deciding which of these planets may be suitable for
life. Until now, though, little work has been devoted to deciding which of the
potentially habitable planets might actually be \textit{worth} existing on. To
this end, we present the Really Habitable Zone (RHZ), defined as the region
around a star where acceptable gins and tonic are likely to be abundant. In
common with much of the work in the field, we rely throughout on assumptions
which are difficult if not impossible to test and present some plots which
astronomers can use in their own talks, stripped of all caveats. We suggest
that planets in the Really Habitable Zone be early targets for the JWST,
because by the time that thing finally launches we're all going to need a
drink.
- Quantum Godwin's Law
2003.13715 [abs] [pdf]
[abstract]
by Michalis Skotiniotis and Andreas Winter.
Godwin's law, i.e. the empirical observation that as an online discussion
grows in time, the probability of a comparison with Nazis or Hitler quickly
approaches unity, is one of the best-documented facts of the internet.
Anticipating the quantum internet, here we show under reasonable model
assumptions a polynomial quantum speedup of Godwin's law. Concretely, in
quantum discussions, Hitler will be mentioned on average quadratically earlier,
and we conjecture that under specific network topologies, even cubic speedups
are possible. We also show that the speedup cannot be more than exponential,
unless the polynomial hierarchy collapses to a certain finite level. We report
on numerical experiments to simulate the appearance of the quantum Godwin law
in future quantum internets; the most amazing finding of our studies is that --
unlike quantum computational speedups -- the quantum Godwin effect is not only
robust against noise, but actually enhanced by decoherence. We have as yet no
theoretical explanation, nor a good application, for this astonishing
behaviour, which we dub quantum hyperpiesia.
- Cosmological Dark Matter: a Review (the April Fool Edition)
2003.13696 [abs] [pdf]
[abstract]
by M. R. Lovell.
Evidence has continued to accumulate over the last few decades as to the
existence and nature of dark matter. Depending on the particle candidate, the
dark matter can exhibit one of several cosmologically defined models: hot dark
matter, cold dark matter, warm dark matter, self-interacting dark matter, and
fuzzy dark matter. In this paper I review the relevance and status of these
models, whether it is possible for more than one of these models to each
constitute some fraction of the dark matter, and discuss the prospects for
determining if any of these models can successfully describe the properties and
evolution of our own Universe.
2019
- The Marshland Conjecture
1903.12643 [abs] [pdf]
[abstract]
by David M. C. Marsh and J. E. David Marsh.
We posit the existence of the Marshland within string theory. This region is
the boundary between the landscape of consistent low-energy limits of quantum
gravity, and the swampland of theories that cannot be embedded within string
theory because they violate certain trendy and obviously uncontroversial
conjectures. The Marshland is probably fractal, and we show some pretty
pictures of fractals that will be useful in talks. We further show that the
Marshland contains theories with a large number of light axions, allowing us to
cite lots of our own papers. We show that the Marshland makes up most of the
volume of the landscape, and admits a novel, weakly broken $\mathbb{Z}_2$
Marshymmetry that we find strong evidence for by considering a carefully
crafted example.
- Forecasting Future Murders of Mr. Boddy by Numerical Weather Prediction
1903.12604 [abs] [pdf]
[abstract]
by Eve Armstrong.
Despite a previous description of his state as a stable fixed point, just
past midnight this morning Mr. Boddy was murdered again. In fact, over 70 years
Mr. Boddy has been reported murdered $10^6$ times, while there exist no
documented attempts at intervention. Using variational data assimilation, we
train a model of Mr. Boddy's dynamics on the time series of observed murders,
to forecast future murders. The parameters to be estimated include instrument,
location, and murderer. We find that a successful estimation requires three
additional elements. First, to minimize the effects of selection bias, generous
ranges are placed on parameter searches, permitting values such as the Cliff,
the Poisoned Apple, and the Wife. Second, motive, which was not considered
relevant to previous murders, is added as a parameter. Third, Mr. Boddy's
little-known asthmatic condition is considered as an alternative cause of
death. Following this morning's event, the next local murder is forecast for
17:19:03 EDT this afternoon, with a standard deviation of seven hours, at The
Kitchen at 4330 Katonah Avenue, Bronx, NY, 10470, with either the Lead Pipe or
the Lead Bust of Washington Irving. The motive is: Case of Mistaken Identity,
and there was no convergence upon a murderer. Testing of the procedure's
predictive power will involve catching the D train to 205th Street and a few
transfers over to Katonah Avenue, and sitting around waiting with our eyes
peeled. We discuss the problem of identifying a global solution - that is, the
best reason for murder on a landscape riddled with pretty-decent reasons. We
also discuss the procedure's assumption of Gaussian-distributed errors, which
will under-predict rare events. This under-representation of highly improbable
events may be offset by the fact that the training data, after all, consists of
multiple murders of a single person.
- Worlds in Migration
1903.12437 [abs] [pdf]
[abstract]
by Michael B. Lund.
In this paper we discuss an alternative track for migration that can explain
the existence of Hot Jupiters observed in close orbits around their stars based
on a novel interpretation of established work. We also discuss the population
of sub-Earth rogue planets that would be created via this migration method,
which would be on the order of 2 to 40 billion, many of which would still be
present in the Galaxy and potentially detectable.
- A new kind of radio transient: ERBs
1903.12412 [abs] [pdf]
[abstract]
by Douglas Scott and Ali Frolop.
We describe the discovery of a new kind of radio transient, which we call
"early-riser bursts" or ERBs. We found this new class of source by considering
traditional radio searches, but extending into the complex plane of dispersion
measure. ERBs have the remarkable property of appearing before they are
searched for. We provide suggestions for the most likely origin of this new
astronomical phenomenon.
- Superfluous Physics
1903.12201 [abs] [pdf]
[abstract]
by Evan Berkowitz, William Donnelly, and Sylvia Zhu.
A superweapon of modern physics superscribes a wide superset of phenomena,
ranging from supernumerary rainbows to superfluidity and even possible
supermultiplets.
- The Long Night: Modeling the Climate of Westeros
1903.12195 [abs] [pdf]
[abstract]
by Adiv Paradise, [and 3 more]Alysa Obertas, Anna O'Grady, and Matthew Young [hide authors].
Many previous authors have attempted to find explanations for Westeros's
climate, characterized by a generally moderate, Earth-like climate punctuated
by extremely long and cold winters, separated by thousands of years. One
explanation that has been proposed is that the planet orbits in a Sitnikov
configuration, where two equal-mass stars (or a star and a black hole) orbit
each other on slightly eccentric orbits, and the planet moves along a line
through the barycenter perpendicular to the primaries' orbital plane
(Freistetter & Gr\"utzbauch 2018). We modify an intermediate-complexity GCM to
include the effects of such an orbit and integrate it for thousands of years to
determine whether such an orbit can a) be habitable and b) explain the climatic
variations observed by the inhabitants of Westeros, in both double-star and
star-black hole configurations. While configurations with low primary
eccentricity and initial conditions that permit only small excursions from the
ecliptic plane are habitable, these orbits are too stable to explain Westerosi
climate. We find that while orbits with more bounded chaos are able to produce
rare anomalously long and cold winters similar to Westeros's Long Night, huge
variations in incident stellar flux on normal orbital timescales should render
these planets uninhabitable. We note that the presence of an orbital
megastructure, either around the planet or the barycenter, could block some of
the sunlight during crossings of the primaries' orbital plane and preserve
Westeros's habitability. While we find that bounded chaotic Sitnikov orbits are
a viable explanation for Westeros's Long Night, we propose that chaotic
variations of the planet's axial tilt or semimajor axis, potentially due to
torques from nearby planets or stars, may be a more realistic explanation than
Sitnikov orbits.
- Fast Radio Bursts from Terraformation
1903.12186 [abs] [pdf]
[abstract]
by Almog Yalinewich, [and 3 more]Mubdi Rahman, Alysa Obertas, and Patrick C. Breysse [hide authors].
Fast radio bursts (FRBs) are, as the name implies, short and intense pulses
of radiation at wavelengths of roughly one metre. FRBs have extremely high
brightness temperatures, which points to a coherent source of radiation. The
energy of a single burst ranges from $10^{36}$ to $10^{39}$ erg. At the high
end of the energy range, FRBs have enough energy to unbind an earth-sized
planet, and even at the low end, there is enough energy to vaporise and unbind
the atmosphere and the oceans. We therefore propose that FRBs are signatures of
an artificial terraformer, capable of eradicating life on another planet, or
even destroy the planet entirely. The necessary energy can be harvested from
Wolf-Rayet stars with a Dyson sphere ($\sim 10^{38}$ erg s$^{-1}$) , and the
radiation can be readily produced by astrophysical masers. We refer to this
mechanism as Volatile Amplification of a Destructive Emission of Radiation
(VADER). We use the observational information to constrain the properties of
the apparatus. We speculate that the non-repeating FRBs are low-energy pulses
used to exterminate life on a single planet, but leaving it otherwise intact,
and that the stronger repeating FRB is part of an effort to destroy multiple
objects in the same solar system, perhaps as a preventative measure against
panspermia. In this picture, the persistent synchrotron source associated with
the first repeating FRB arises from the energy harvesting process. Finally we
propose that Oumuamua might have resulted from a destruction of a planet in
this manner.
- ACRONYM: Acronym CReatiON for You and Me
1903.12180 [abs] [pdf]
[abstract]
by B. A Cook.
Each year, countless hours of productive research time is spent brainstorming
creative acronyms for surveys, simulations, codes, and conferences. We present
ACRONYM, a command-line program developed specifically to assist astronomers in
identifying the best acronyms for ongoing projects. The code returns all
approximately-English-language words that appear within an input string of
text, regardless of whether the letters occur at the beginning of the component
words (in true astronomer fashion).
2018
- Independent Discovery of a Sub-Earth in the Habitable Zone Around a Very
Close Solar-Mass Star
1804.00419 [abs] [pdf]
[abstract]
by Michael B. Lund, Robert J. Siverd, and Ponder Stibbons.
With the wealth of planets that have been discovered over the past $\sim$ 20
years, the field can broadly be divided into two regimes. For understanding
broad occurrence and formation rates, large numbers of planets allow for
population statistics to be calculated, and this work preferentially tends
towards fainter planets (and fainter host stars) to allow for a large number of
detections. The second regime is the detailed understanding of a single planet,
with particular consideration to planetary structure and atmosphere, and in
this case benefits from finding individual planets (and host stars) that are
very close, and subsequently, very bright. The closest of these also provide
very novel possibilities for exploration if they are close enough that travel
time to them is relatively low, something that would be extremely unlikely for
more distant planets. Here, we announce the independent discovery of a
sub-earth planet orbiting in the habitable zone of a very close solar-mass star
using a novel processing technique and observations from the Kilodegree
Extremely Little Telescope (KELT).
- Sitnikov in Westeros: How Celestial Mechanics finally explains why
winter is coming in Game of Thrones
1803.11390 [abs] [pdf]
[abstract]
by Florian Freistetter and Ruth Grützbauch.
"Winter is coming". As far as meteorological predictions go, the words of
House Stark are both trivial and not very helpful for a scientific analysis to
explain the chaotic sequence of the seasons in the world of "Game of Thrones".
The natives of Westeros have failed to develop a feasible model to understand
and predict the coming and duration of their winters. And although the
scientists of Earth have brought forth many different mechanisms to explain the
seasons, all of them are found wanting (at least by us). Nobody seems to have
discovered the one and only true and working mechanism to explain the coming
and going of winters on Westeros and thus it is up to us to introduce the world
to the might of the often ignored Sitnikov problem. That very special
configuration of two stars and one planet is ideally suited to explain
everything that needs to be explained and uncover the real reason for the
coming of winter.
- Super-Earths in need for Extremly Big Rockets
1803.11384 [abs] [pdf]
[abstract]
by Michael Hippke.
Many rocky exoplanets are heavier and larger than Earth, so-called
"Super-Earths". Some of these may be habitable, and a few may be inhabited by
Super-Earthlings. Due to the higher surface gravity on these worlds,
space-flight is much more challenging. We find that chemical rockets still
allow for escape velocities on Super-Earths up to 10x Earth mass. Much heavier
rocky worlds, if they exist, will require using up most of the planet as
chemical fuel for the (one) launch, a rather risky undertaking. We also briefly
discuss launching rockets from water worlds, which requires Alien
megastructures.
2017
- A Neural Networks Approach to Predicting How Things Might Have Turned
Out Had I Mustered the Nerve to Ask Barry Cottonfield to the Junior Prom Back
in 1997
1703.10449 [abs] [pdf]
[abstract]
by Eve Armstrong.
We use a feed-forward artificial neural network with back-propagation through
a single hidden layer to predict Barry Cottonfield's likely reply to this
author's invitation to the "Once Upon a Daydream" junior prom at the Conard
High School gymnasium back in 1997. To examine the network's ability to
generalize to such a situation beyond specific training scenarios, we use a L2
regularization term in the cost function and examine performance over a range
of regularization strengths. In addition, we examine the nonsensical
decision-making strategies that emerge in Barry at times when he has recently
engaged in a fight with his annoying kid sister Janice. To simulate Barry's
inability to learn efficiently from large mistakes (an observation well
documented by his algebra teacher during sophomore year), we choose a simple
quadratic form for the cost function, so that the weight update magnitude is
not necessary correlated with the magnitude of output error.
Network performance on test data indicates that this author would have
received an 87.2 (1)% chance of "Yes" given a particular set of environmental
input parameters. Most critically, the optimal method of question delivery is
found to be Secret Note rather than Verbal Speech. There also exists mild
evidence that wearing a burgundy mini-dress might have helped. The network
performs comparably for all values of regularization strength, which suggests
that the nature of noise in a high school hallway during passing time does not
affect much of anything. We comment on possible biases inherent in the output,
implications regarding the functionality of a real biological network, and
future directions. Over-training is also discussed, although the linear algebra
teacher assures us that in Barry's case this is not possible.
- Detecting the Ultimate Power in the Universe with LSST
1703.10432 [abs] [pdf]
[abstract]
by Michael B. Lund.
Large time-domain surveys, when of sufficient scale, provide a greatly
increased probability of detecting rare and, in many cases, unexpected events.
Indeed, it is these unpredicted and previously unobserved objects that can lead
to some of the greatest leaps in our understanding of the cosmos. The events
that may be monitored include not only those that help contribute to our
understanding of sources astrophysical variability, but may also extend to the
discovery and characterization of civilizations comprised of other sentient
lifeforms in the universe. In this paper we examine if the Large Synoptic
Survey Telescope (LSST) will have the ability to detect the immediate and
short-term effects of a concave dish composite beam superlaser being fired at
an Earth analog from an alien megastructure.
- Stopping GAN Violence: Generative Unadversarial Networks
1703.02528 [abs] [pdf]
[abstract]
by Samuel Albanie, Sébastien Ehrhardt, and João F. Henriques.
While the costs of human violence have attracted a great deal of attention
from the research community, the effects of the network-on-network (NoN)
violence popularised by Generative Adversarial Networks have yet to be
addressed. In this work, we quantify the financial, social, spiritual,
cultural, grammatical and dermatological impact of this aggression and address
the issue by proposing a more peaceful approach which we term Generative
Unadversarial Networks (GUNs). Under this framework, we simultaneously train
two models: a generator G that does its best to capture whichever data
distribution it feels it can manage, and a motivator M that helps G to achieve
its dream. Fighting is strictly verboten and both models evolve by learning to
respect their differences. The framework is both theoretically and electrically
grounded in game theory, and can be viewed as a winner-shares-all two-player
game in which both players work as a team to achieve the best score.
Experiments show that by working in harmony, the proposed model is able to
claim both the moral and log-likelihood high ground. Our work builds on a rich
history of carefully argued position-papers, published as anonymous YouTube
comments, which prove that the optimal solution to NoN violence is more GUNs.
2016
- Pipe-cleaner Model of Neuronal Network Dynamics
1603.09723 [abs] [pdf]
[abstract]
by Eve Armstrong.
We present a functional model of neuronal network connectivity in which the
single architectural element is the object commonly known in handicraft circles
as a pipe cleaner. We argue that the dual nature of a neuronal circuit - that
it be at times highly robust to external manipulation and yet sufficiently
flexible to allow for learning and adaptation - is embodied in the pipe
cleaner, and thus that a pipe cleaner framework serves as an instructive
scaffold in which to examine network dynamics. Regarding the dynamics
themselves: as pipe cleaners possess no intrinsic dynamics, in our model we
attribute the emergent circuit dynamics to magic. Magic is a strategy that has
been largely neglected in the neuroscience community, and may serve as an
illuminating comparison to the common physics-based approaches. This model
makes predictions that it would be really awesome to test experimentally.
Moreover, the relative simplicity of the pipe cleaner - setting aside the fact
that it comes in an overwhelming variety of colors - renders it an excellent
theoretical building block with which to create simple network models. Also,
they are incredibly cheap when bought wholesale on Amazon.
- Pi in the sky
1603.09703 [abs] [pdf]
[abstract]
by Ali Frolop and Douglas Scott.
Deviations of the observed cosmic microwave background (CMB) from the
standard model, known as "anomalies", are obviously highly significant and
deserve to be pursued more aggressively in order to discover the physical
phenomena underlying them. Through intensive investigation we have discovered
that there are equally surprising features in the digits of the number $\pi$,
and moreover there is a remarkable correspondence between each type of
peculiarity in the digits of $\pi$ and the anomalies in the CMB. Putting aside
the unreasonable possibility that these are just the sort of flukes that appear
when one looks hard enough, the only conceivable conclusion is that, however
the CMB anomalies were created, a similar process imprinted patterns in the
digits of $\pi$.
- Astrology in the Era of Exoplanets
1603.09496 [abs] [pdf]
[abstract]
by Michael B. Lund.
The last two decades have seen the number of known exoplanets increase from a
small handful to nearly 2000 known exoplanets, thousands more planet
candidates, and several upcoming missions that are expected to further increase
the population of known exoplanets. Beyond the strictly scientific questions
that this has led to regarding planet formation and frequency, this has also
led to broader questions such as the philosophical implications of life
elsewhere in the universe and the future of human civilization and space
exploration. One additional realm that hasn't been adequately considered,
however, is that this large increase in exoplanets would also impact claims
regarding astrology. In this paper we look at the distribution of planets
across the sky and along the Ecliptic, as well as the current and future
implications of this planet distribution.
2015
- Beyond the New Horizon: The Future of Pluto
1504.00630 [abs] [pdf]
[abstract]
by Michael B. Lund.
Since its discovery in 1930, Pluto's mass has been a value that has
repeatedly been calculated. Additionally, the search for Planet X prior to
Pluto's discovery results in mass calculations that date back several decades
earlier. Over its observed history, the mass of Pluto has consistently
decreased. We reassess earlier predictions of Pluto's fate, and rule out the
hypothesis that Pluto's mass has been constant over the last century. We are
able to fit linear and quadratic equations to Pluto's mass as a function of
both time and distance. The observations that will be made by New Horizons will
help to determine if we can expect Pluto to continue to shrink until it has
negative mass, or if it will begin to increase in mass again.
- A Farewell to Falsifiability
1504.00108 [abs] [pdf]
[abstract]
by Douglas Scott, [and 3 more]Ali Frolop, Ali Narimani, and Andrei Frolov [hide authors].
Some of the most obviously correct physical theories - namely string theory
and the multiverse - make no testable predictions, leading many to question
whether we should accept something as scientific even if it makes no testable
predictions and hence is not refutable. However, some far-thinking physicists
have proposed instead that we should give up on the notion of Falsifiability
itself. We endorse this suggestion but think it does not go nearly far enough.
We believe that we should also dispense with other outdated ideas, such as
Fidelity, Frugality, Factuality and other "F" words. And we quote a lot of
famous people to support this view.
2014
- The CMB flexes its BICEPs while walking the Planck
1403.8145 [abs] [pdf]
[abstract]
by Douglas Scott and Ali Frolop.
Recent microwave polarization measurements from the BICEP2 experiment may
reveal a long-sought signature of inflation. However, these new results appear
inconsistent with the best-fit model from the Planck satellite. We suggest a
particularly simple idea for reconciling these data-sets, and for explaining a
wide range of phenomena on the cosmic microwave sky.
2013
- "Winter is coming"
1304.0445 [abs] [pdf]
[abstract]
by Veselin Kostov, [and 4 more]Daniel Allan, Nikolaus Hartman, Scott Guzewich, and Justin Rogers [hide authors].
Those that do not sow care little about such mundane things as equinoxes or
planting seasons, or even crop rotation for that matter. Wherever and whenever
the reavers reave, the mood is always foul and the nights are never warm or
pleasant. For the rest of the good folks of Westeros, however, a decent grasp
of the long-term weather forecast is a necessity. Many a maester have tried to
play the Game of Weather Patterns and foretell when to plant those last turnip
seeds, hoping for a few more years of balmy respite. Tried and failed. For
other than the somewhat vague (if not outright meaningless) omens of "Winter is
Coming", their meteorological efforts have been worse than useless. To right
that appalling wrong, here we attempt to explain the apparently erratic
seasonal changes in the world of G.R.R.M. A natural explanation for such
phenomena is the unique behavior of a circumbinary planet. Thus, by speculating
that the planet under scrutiny is orbiting a pair of stars, we utilize the
power of numerical three-body dynamics to predict that, unfortunately, it is
not possible to predict either the length, or the severity of any coming
winter. We conclude that, alas, the Maesters were right -- one can only throw
their hands in the air in frustration and, defeated by non-analytic solutions,
mumble "Coming winter? May be long and nasty (~850 days, T<268K) or may be
short and sweet (~600 days, T~273K). Who knows..."
- Conspiratorial cosmology - the case against the Universe
1303.7476 [abs] [pdf]
[abstract]
by Jörg P. Rachen and Ute G. Gahlings.
Based on the cosmological results of the Planck Mission, we show that all
parameters describing our Universe within the \Lambda CDM model can be
constructed from a small set of numbers known from conspiracy theory. Our
finding is confirmed by recent data from high energy particle physics. This
clearly demonstrates that our Universe is a plot initiated by an unknown
interest group or lodge. We analyse possible scenarios for this conspiracy, and
conclude that the belief in the existence of our Universe is an illusion, as
previously assumed by ancient philosophers, 20th century science fiction
authors and contemporary film makers.
- Unidentified Moving Objects in Next Generation Time Domain Surveys
1303.7433 [abs] [pdf]
[abstract]
by James R. A. Davenport.
Existing and future wide-field photometric surveys will produce a time-lapse
movie of the sky that will revolutionize our census of variable and moving
astronomical and atmospheric phenomena. As with any revolution in scientific
measurement capability, this new species of data will also present us with
results that are sure to surprise and confound our understanding of the cosmos.
While we cannot predict the unknown yields of such endeavors, it is a
beneficial exercise to explore certain parameter spaces using reasonable
assumptions for rates and observability. To this end I present a simple
parameterized model of the detectability of unidentified flying objects (UFOs)
with the Large Synoptic Survey Telescope (LSST). I also demonstrate that the
LSST is well suited to place the first systematic constraints on the rate of
UFO and extraterrestrial visits to our world.
- A search for direct heffalon production using the ATLAS and CMS
experiments at the Large Hadron Collider
1303.7367 [abs] [pdf]
[abstract]
by Alan J. Barr and Christopher G. Lester.
The first search is reported for direct heffalon production, using 23.3/fb
per experiment of delivered integrated luminosity of proton-proton collisions
at rootS = 8TeV from the Large Hadron Collider. The data were recorded with the
ATLAS and the CMS detectors. Each exotic composite is assumed to be stable on
the detector lifetime (tau >> ns). A particularly striking signature is
expected. No signal events are observed after event selection. The cross
section for heffalon production is found to be less than 64ab at the 95%
confidence level.
- Pareidolic Dark Matter (PaDaM)
1303.7262 [abs] [pdf]
[abstract]
by N. Mirabal.
A pareidolic conjecture for the Fermi Large Area Telescope.
2012
- Non-detection of the Tooth Fairy at Optical Wavelengths
1204.0492 [abs] [pdf]
[abstract]
by Eve Armstrong.
We report a non-detection, to a limiting magnitude of V = 18.4 (9), of the
elusive entity commonly described as the Tooth Fairy. We review various
physical models and conclude that follow-up observations must precede an
interpretation of our result.
- On the Ratio of Circumference to Diameter for the Largest Observable
Circles: An Empirical Approach
1204.0298 [abs] [pdf]
[abstract]
by Lloyd Knox.
I present here a measurement of pi as determined for the largest observable
circles. Intriguingly, the value of 16/5 asserted by the House of
Representatives of the State of Indiana in 1897 is still viable, although
strongly disfavored relative to 22/7, another popular value. The oft-used
`small-circle' value of 3 is ruled out at greater than 5\sigma. We discuss
connections with string theory, sterile neutrinos, and possibilities for (very
large) lower limits to the size of the Universe.
- The Proof of Innocence
1204.0162 [abs] [pdf]
[abstract]
by Dmitri Krioukov.
A way to fight your traffic tickets. The paper was awarded a special prize of
$400 that the author did not have to pay to the state of California.
In view of enormous, extremely surprising and completely unexpected public
interest to this work, we have added an appendix answering the two most common
questions.
2011
- Non-standard morphological relic patterns in the cosmic microwave
background
1103.6262 [abs] [pdf]
[abstract]
by Joe Zuntz, [and 3 more]James P. Zibin, Caroline Zunckel, and Jonathan Zwart [hide authors].
Statistically anomalous signals in the microwave background have been
extensively studied in general in multipole space, and in real space mainly for
circular and other simple patterns. In this paper we search for a range of
non-trivial patterns in the temperature data from WMAP 7-year observations. We
find a very significant detection of a number of such features and discuss
their consequences for the essential character of the cosmos.
2010
- Orthographic Correlations in Astrophysics
1003.6064 [abs] [pdf]
[abstract]
by Joe Zuntz, [and 3 more]Thomas G. Zlosnik, Caroline Zunckel, and Jonathan T. L. Zwart [hide authors].
We analyze correlations between the first letter of the name of an author and
the number of citations their papers receive. We look at simple mean counts,
numbers of highly-cited papers, and normalized h-indices, by letter. To our
surprise, we conclude that orthographically senior authors produce a better
body of work than their colleagues, despite some evidence of discrimination
against them.
2009
- Galaxy Zoo: an unusual new class of galaxy cluster
0903.5377 [abs] [pdf]
[abstract]
by Marven F. Pedbost, Trillean Pomalgu, and the Galaxy Zoo team.
We have identified a new class of galaxy cluster using data from the Galaxy
Zoo project. These clusters are rare, and thus have apparently gone unnoticed
before, despite their unusual properties. They appear especially anomalous when
the morphological properties of their component galaxies are considered. Their
identification therefore depends upon the visual inspection of large numbers of
galaxies, a feat which has only recently been made possible by Galaxy Zoo,
together with the Sloan Digital Sky Survey. We present the basic properties of
our cluster sample, and discuss possible formation scenarios and implications
for cosmology.
- Time variation of a fundamental dimensionless constant
0903.5321 [abs] [pdf]
[abstract]
by Robert J. Scherrer.
We examine the time variation of a previously-uninvestigated fundamental
dimensionless constant. Constraints are placed on this time variation using
historical measurements. A model is presented for the time variation, and it is
shown to lead to an accelerated expansion for the universe. Directions for
future research are discussed.
2008
- Down-sizing Forever
0803.4378 [abs] [pdf]
[abstract]
by Douglas Scott and Ali Frolop.
Evidence for cosmic down-sizing has been growing over the last decade. It is
now clear that the major star-forming epoch for the largest galaxies occurred
earlier than for smaller galaxies. This not only runs counter to the popular
hierarchical clustering picture, but points to an even more radical revision of
our ideas of the evolution of cosmological structure. Galaxies do not form at
all.
2007
- Natural Dark Energy
astro-ph/0703783 [abs] [pdf]
[abstract]
by Douglas Scott and Ali Frolop.
It is now well accepted that both Dark Matter and Dark Energy are required in
any successful cosmological model. Although there is ample evidence that both
Dark components are necessary, the conventional theories make no prediction for
the contributions from each of them. Moreover, there is usually no intrinsic
relationship between the two components, and no understanding of the nature of
the mysteries of the Dark Sector. Here we suggest that if the Dark Side is so
seductive then we should not be restricted to just 2 components. We further
suggest that the most natural model has 5 distinct forms of Dark Energy in
addition to the usual Dark Matter, each contributing precisely equally to the
cosmic energy density budget.
2006
- Cosmic Conspiracies
astro-ph/0604011 [abs] [pdf]
[abstract]
by Douglas Scott and Ali Frolop.
The now standard vanilla-flavoured LambdaCDM model has gained further
confirmation with the release of the 3-year WMAP data combined with several
other cosmological data-sets. As the parameters of this standard model become
known with increasing precision, more of its bizarre features become apparent.
Here we describe some of the strangest of these ostensible coincidences. In
particular we appear to live (within 1sigma) at the precise epoch when the age
of the Universe multiplied by the Hubble parameter H_0 t_0 = 1.
2002
- On the Utter Irrelevance of LPL Graduate Students: An Unbiased Survey by
Steward Observatory Graduate Students
astro-ph/0204041 [abs] [pdf]
[abstract]
by J. J. Charfman, [and 10 more]J. B. Bsc, K. A. Eriksen, K. Knierman, A. Leistra, E. Mamajek, J. Monkiewicz, J. Moustakas, J. Murphy, J. Rigby, and P. A. Young [hide authors].
We present a new analysis of the irrelevance of Lunar and Planetary
Laboratory (LPL) graduate students at the University of Arizona. Based on
extensive Monte Carlo simulations we find that the actual number of useful
results from LPL graduate students is $0\pm0.01 (5\sigma)$. Their irrelevance
quotient far surpasses that of string theorists.
- Superiority of the Lunar and Planetary Laboratory (LPL) over Steward
Observatory (SO) at the University of Arizona
astro-ph/0204013 [abs] [pdf]
[abstract]
by Jason W. Barnes, [and 3 more]D. P. O'Brien, J. J. Fortney, and Terry A. Hurford [hide authors].
LPL dominance over Steward is demonstrated through several lines of evidence
including observations and modelling of previous April Fools day behavior. The
decrease in Steward coolness is attributed to the departure of interesting
graduate students from Steward that enrolled at LPL.