Tootfinder

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

🇺🇦 #NowPlaying on KEXP's #MorningShow
The Chemical Brothers:
🎵 The Universe Sent Me
#TheChemicalBrothers
https://maryag.bandcamp.com/track/the-chemical-brothers-the-universe-sent-me-maryag-remix
https://open.spotify.com/track/4u0fYkrfpqcFjsGVEk4ewM

Signals of Bursts from the Very Early Universe / Positron signal from the early Univere [sic!]: #universe.

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

I love Cosmology. Nothing is more worthless than last year's textbook. Especially on the basics. It keeps the field humble.
Strong progenitor age bias in supernova cosmology – II. Alignment with DESI BAO and signs of a non-accelerating universe | Monthly Notices of the Royal Astronomical Society | Oxford Academic
https://academic.oup.com/mnras/article/544/1/975/8281988

"Spiritual humility and ecological wisdom alike teach us that it’s time to let go of anthropocentrism—the idea that human beings are the center of the universe. Instead, we can rejoice that all creatures belong to Jesus … "
—Professor and alum Carolyn Sharp ’94 M.A.R., ’00 Ph.D. writing in the new issue of Reflections, in her piece "Let There Be Life! A Sermonic Call to Ecological Witness"

In an alternative universe, Sharkey is the biggest fedi service and toots are called noms

The Most Important Device in the Universe - Blinking Tubes Without Function New Compilation (Part 1)
https://www.youtube.com/watch?v=phPp5oYnps0

Doctor Rashomon and the UNIVERSE of Madness: Variable Importance with Unobserved Confounding and the Rashomon Effect
Jon Donnelly, Srikar Katta, Emanuele Borgonovo, Cynthia Rudin
https://arxiv.org/abs/2510.12734

Doctor Rashomon and the UNIVERSE of Madness: Variable Importance with Unobserved Confounding and the Rashomon Effect
Variable importance (VI) methods are often used for hypothesis generation, feature selection, and scientific validation. In the standard VI pipeline, an analyst estimates VI for a single predictive model with only the observed features. However, the importance of a feature depends heavily on which other variables are included in the model, and essential variables are often omitted from observational datasets. Moreover, the VI estimated for one model is often not the same as the VI estimated for…

I don't think there's enough coffee in the universe. We need more!

The day ‘Return’ became ´Enter’
In the popular imagination, the transition from the world of typewriters to the universe of computers was orderly and simple.
But the reality is much more fascinating and convoluted.
https://aresluna.org/the-day-return-became-enter/…

Complementarity of gravitational wave analyses and di-Higgs production in the exploration of the Electroweak Phase Transition dynamics in the RxSM
Johannes Braathen, Sven Heinemeyer, Carlos Pulido Boatella, Alain Verduras Schaeidt
https://arxiv.org/abs/2510.12569

Complementarity of gravitational wave analyses and di-Higgs production in the exploration of the Electroweak Phase Transition dynamics in the RxSM
The real singlet extension of the Standard Model (SM), RxSM, is one of the simplest Beyond-the-Standard Model (BSM) theories that can accommodate a strong first-order electroweak phase transition (SFOEWPT). We survey the possible thermal histories of the early Universe in the RxSM, and find that a SFOEWPT can occur in this model as single- or two-step phase transitions. We investigate complementary approaches to probe such scenarios experimentally: either via searches for a stochastic backgroun…

"The tech platforms that promised to transform our attention spans succeeded, but only superficially. They created a new, much worse way of creating culture. A universe of dumbasses talking to other dumbasses, measured by numbers that don’t make sense and don’t reflect anything other than passive screen time."
(Original title: The Great Dumbening)

The Great Dumbening
Read to the end for it’s Tronin’ time

Extreme properties of a compact and massive accreting black hole host in the first 500 Myr: #BlackHole in the early Universe: https://esawebb.org/news/weic2522/

Exordia (2024) by Seth Dickinson is a fun romp on trolley problems if your idea of fun includes "nuke Kurdistan or else we nuke the world". Obama is president, and an alien appears in Central Park to drag some broken people into a battle over an artifact that can change the universe. These aliens have actual Original Sin, and visibly so. Humans freak out at the alien wrongness, a metaphysical brand that shows the entire alien race is doomed from birth to go to a literal hell when t…

Big Bang Nucleosynthesis constraints on space-time noncommutativity
Teodora Maria Matei, Cristian Croitoru, Tiberiu Harko
https://arxiv.org/abs/2510.10685 https://

Big Bang Nucleosynthesis constraints on space-time noncommutativity
We consider the implications of the modified dispersion relations, due to the noncommutativity of the spacetime, for a photon gas filling the early Universe in the framework of the Big Bang Nucleosynthesis (BBN) processes, during the period of light elements formation. We consider three types of deformations present in the dispersion relations for the radiation gas, from which we obtain the low temperature corrections to the energy density and pressure. The cosmological implications of the modi…

I'm slowly and entirely accidentally working my way through the canon of stuntman Loren Janes. (No relation as far as I've been able to determine.) The first time I saw his name was in the credits for Masters of the Universe leading into a show I'd videotaped; the most recent was in Escape from New York (today). Pretty sure the most famous film he worked in was Back to the Future, which I've seen *many* times, but haven't yet watched again since learning he was involved. …

Probing the Physics of Dusty Outflows through Complex Organic Molecules in the Early Universe
Andrey Vayner, Tanio D\'iaz-Santos, Carl D. Ferkinhoff, Peter R. M. Eisenhardt, Daniel Stern, Lee Armus, Brandon S. Hensley, Daniel Angl\'es-Alc\'azar, Roberto J. Assef, Rom\'an Fern\'andez Aranda, Andrew W. Blain, Hyunsung D. Jun, Norman W. Murray, Shelley Wright, Chao-Wei Tsai, Thomas Lai, Niranjan Chandra Roy, Drew Brisbin, Manuel Aravena, Jorge Gonz\'alez-L\'ope…

Probing the Physics of Dusty Outflows through Complex Organic Molecules in the Early Universe
Galaxy-scale outflows are of critical importance for galaxy formation and evolution. Dust grains are the main sites for the formation of molecules needed for star formation but are also important for the acceleration of outflows that can remove the gas reservoir critical for stellar mass growth. Using the MIRI medium-resolution integral field spectrograph aboard the James Webb Space Telescope (JWST), we detect the 3.28 $μ$m aromatic and the 3.4 $μ$m aliphatic hydrocarbon dust features in abso…

A profile of Josh Wallace Kerrigan, also known as Neural Viz, an independent creator using Midjourney, Runway, and other AI tools to create a cinematic universe (Christopher Beam/Wired)
https://www.wired.com/story/the-future-of-ai-media-parody-of-t…

The Future of AI Isn't Just Slop
Behold Neural Viz, the first great cinematic universe of the AI era. It's from a guy named Josh.

Exploring scientific realms is like uncovering the universe's complex blueprint. Each discovery deepens our understanding of our world. 🌌🔍 What recent advancements have piqued your interest? Let's embark on this #DiscoveryJourney together to expand our knowledge. #ScienceIsAwesome #CuriousMinds

The Holy Mountain (1973) is profoundly bizarre, some would probably find much of this disturbing, and I'm glad I'm finally watching it 😂
#film

The Holy Mountain (1973)
The Alchemist assembles together a group of people from all walks of life to represent the planets in the solar system. The occult adept's intention is to put his recruits through strange mystical rites and divest them of their worldly baggage before embarking on a trip to Lotus Island. There they ascend the Holy Mountain to displace the immortal gods who secretly rule the universe.

A profile of Josh Wallace Kerrigan, also known as Neural Viz, a filmmaker using AI tools from Midjourney to Runway to create a cinematic universe (Christopher Beam/Wired)
https://www.wired.com/story/the-future-of-ai-media-parody-of-the-apocalypse-g…

The Future of AI Isn't Just Slop
Behold Neural Viz, the first great cinematic universe of the AI era. It's from a guy named Josh.

https://www.universetoday.com/articles/the-early-universe-helps-black-holes-grow-big-but-not-in-the-long-run

In the second of two episodes to mark the centenary of quantum physics,
we hear how the boundary between the quantum and classical worlds causes huge inconsistencies
—and a debate about the nature of reality itself.
Our guest today,
Vlatko Vedr,
explains his radical vision for fixing those problems and building a consistent understanding of the universe

From kinetic gasses to an exponentially expanding universe: #universe: https://www.zarm.uni-bremen.de/en/news-list/news-display/new-attempt-to-explain-the-accelerated-expansion-of-the-universe

On Geometric Structures in the Einstein Universe for $\mathrm{SO}_0(p,p 1)$-Hitchin Representations
Colin Davalo, Parker Evans
https://arxiv.org/abs/2510.12779 https://

On Geometric Structures in the Einstein Universe for $\mathrm{SO}_0(p,p+1)$-Hitchin Representations
Let $S$ be a closed surface of genus $g \geq 2$. We determine the topology of the fibers of the domain of discontinuity in $\mathrm{Ein}^{p-1,p}$ defined by Guichard-Wienhard and Kapovich-Leeb-Porti for $\mathrm{SO}_0(p,p+1)$-Hitchin representations for $p \geq 3$.

what if i could bend the moral arc of the universe and choo,se not to

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

A triumph of film art, creating on the screen a vast, awe-inspiring picture of the universe as it would appear to a voyager through space, this film was among the sources used by Stanley Kubrick in his 2001: A Space Odyssey.
Universe - #NFB
https://www.nfb.ca/film/universe/

@… DYK Squirrel Girl took down 2 of the most powerful villains in the Marvel Universe, Dr. Doom & Thanos? 😂
▶️ Uncovering the Mystery Behind Marvel's Lost Squirrel Girl Show - CutShort
https://<…

Eternal inflation bubble collision signature on CMB remote dipole and quadrupole fields
Hongbo Cai, Pengjie Zhang, Yilun Guan
https://arxiv.org/abs/2510.12134 https://

Eternal inflation bubble collision signature on CMB remote dipole and quadrupole fields
The remote dipole and quadrupole fields (RDF/RQF) encode information about the observable universe as seen from remote places within our past light cone. Sensitive to the superhorizon inhomogeneites, they provide a unique way to probe physics at the largest scales, bypassing the limitations of cosmic variance inherent in the primary cosmic microwave background (CMB). In this work, we focus on the bubble collision predicted by the eternal inflation theory, which can leave distinct azimuthally sy…

Series C, Episode 04 - Dawn of the Gods
CALIPH: Welcome to Krandor, my friends. An artificial planet, which is the palace of the Lord Thaarn, Master of the Universe. I am the Caliph of Krandor. Among other things, it is my duty as the Lord Thaarn's chief executive, to negotiate a purchase price for your ship. We, uh, usually use this for rounding up runaway slaves. Oh, quite inappropriate in this instance, but it was nearest at the time. I do hope you understand.
TARRANT: We…

Invisible Languages of the LLM Universe
Saurabh Khanna, Xinxu Li
https://arxiv.org/abs/2510.11557 https://arxiv.org/pdf/2510.11557

Invisible Languages of the LLM Universe
Large Language Models are trained on massive multilingual corpora, yet this abundance masks a profound crisis: of the world's 7,613 living languages, approximately 2,000 languages with millions of speakers remain effectively invisible in digital ecosystems. We propose a critical framework connecting empirical measurements of language vitality (real world demographic strength) and digitality (online presence) with postcolonial theory and epistemic injustice to explain why linguistic inequality i…

Commando Cody: Sky Marshal of the Universe

Quantized Dirac Fields in torsionful gravity: cosmological implications and links with the dark universe
Antonio Capolupo, Sante Carloni, Luca Fabbri, Simone Monda, Aniello Quaranta, Stefano Vignolo
https://arxiv.org/abs/2510.06874

Quantized Dirac Fields in torsionful gravity: cosmological implications and links with the dark universe
We consider a classical field in square torsion theory as a source of torsion for a quantum fermion field in FLRW metric. In the framework of QFT, we obtain vacuum contributions to the energy-momentum tensor and to the axial current that modify the dynamics of the classical field and the field equations as back-reaction. These contributions lead to a modified classical field and therefore to a modified torsion term $L^μ$ and expectation value of energy-momentum tensor $T^{μν}$ on the quantum…

PAH Spectral Diversity in NGC 7027 and the Evolution of Aromatic Carriers
Charlotte Smith-Perez, Aidan Hembruff, Els Peeters, Alexander G. G. M. Tielens, Alessandra Ricca
https://arxiv.org/abs/2510.09972

PAH Spectral Diversity in NGC 7027 and the Evolution of Aromatic Carriers
Polycyclic Aromatic Hydrocarbons (PAHs) constitute a significant fraction of the Universe's carbon budget, playing a key role in the cosmic carbon cycle and dominating the mid-infrared spectra of astrophysical environments in which they reside. Although PAHs are known to form in the circumstellar envelopes of post-AGB stars, their formation and evolution are still not well-understood. We aim to understand how pristine complex hydrocarbons and PAHs in circumstellar environments transition to the…

On September 28th, 1867, Toronto officially became the capital city of the new Province of Ontario, and universally accepted as the centre of the universe. It was kind of a pity decision since Toronto had recently lost out to Ottawa when the Queen, the one in England, chose the capital for the Province of Canada. Confederation decreed that the Province of Canada would be split with Canada East becoming Quebec, and Canada West would now be known as Ontario. Toronto got the last laugh because the entire country now revolves around the city, at least in the minds of certain provincial politicians who may or may not want all of Canada to pay for a tunnel under #Hwy401.
#CanadaIsAwesome #CanadianCapitals
https://en.wikipedia.org/wiki/Toronto

Machine Learning Frameworks for Large-Scale Radio Surveys: A Summary of Recent Studies
Nikhel Gupta
https://arxiv.org/abs/2510.11145 https://arxiv.org/pdf/…

Machine Learning Frameworks for Large-Scale Radio Surveys: A Summary of Recent Studies
The rapid growth of large-scale radio surveys, generating over 100 petabytes of data annually, has created a pressing need for automated data analysis methods. Recent research has explored the application of machine learning techniques to address the challenges associated with detecting and classifying radio galaxies, as well as discovering peculiar radio sources. This paper provides an overview of our investigations with the Evolutionary Map of the Universe (EMU) survey, detailing the methodol…

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

Deciphering the Nature of #Virgil - An Obscured Active Galactic Nucleus Lurking within an Apparently Normal Lyα Emitter during Cosmic Reionization: https://iopscience.iop.org/article/10.3847/1538-4357/ae089c -> The monster hiding in plain sight - JWST reveals cosmic shapeshifter in the early universe: https://news.arizona.edu/news/monster-hiding-plain-sight-jwst-reveals-cosmic-shapeshifter-early-universe

Cyclic universe and uniform rate inflation in loop quantum cosmology
Bikash Chandra Paul, Sahil Saini
https://arxiv.org/abs/2510.11230 https://arxiv.org/pd…

Cyclic universe and uniform rate inflation in loop quantum cosmology
We investigate uniform rate inflationary universe in the framework of Loop quantum cosmology. The potential for uniform rate inflation in a loop quantized FRW spacetime turns out to be a polymerized version of the corresponding potential in general relativity, which mimics the potentials for a polymerized scalar field and that for hybrid natural inflation (HNI). The potential leads to a cyclic universe with identical epochs separated by quantum bounces which replace the classical singularity. T…

Faint galaxies in the Zone of Avoidance revealed by JWST/NIRCam
J. L. Nilo-Castell\'on, M. V. Alonso, L. Baravalle, C. Villalon, C. N. A. Willmer, C. Valotto, M. Soto, D. Minniti, M. A. Sgr\'o, I. V. Daza-Perilla, H. Cuevas Larenas, A. Ramirez, J. Alonso-Garc\'ia, P. Marchant Cort\'es, F. Milla Castro
https://arxiv.org/abs/…

Faint galaxies in the Zone of Avoidance revealed by JWST/NIRCam
The Zone of Avoidance (ZoA) remains one of the last frontiers in constructing a comprehensive three-dimensional map of the Universe. Galactic extinction, stellar crowding, and confusion noise have historically limited the detection of background galaxies in these regions, with implications for large-scale structure and cosmological measurements. We assess the capability of the James Webb Space Telescope (JWST) Near Infrared Camera (NIRCam) to detect extragalactic sources in a heavily contaminat…

Mathematical Proof Debunks the Idea That the Universe Is a Computer Simulation - Slashdot
https://science.slashdot.org/story/25/10/30/2232258/mathematical-proof-debunks-the-idea-that-the-universe-is-a-computer-simulation

https://www.space.com/astronomy/dark-universe/dark-matter-obeys-gravity-after-all-could-that-rule-out-a-5th-fundamental-force-in-the-universe

Discord banning people who aren’t even pedos while the real pedos host karaoke in public servers is peak digital clown show. The mods spin in circles, the code eats itself, and everyone claps like this isn’t the dumbest apocalypse ever written.
The pedos stay untouched while the falsely banned fade into the void, posting screenshots from exile. The machine coughs, the users laugh, and the universe hums in white noise, pretending it’s all part of moderation.

Clapshot: open source browser-based media review like frame.io
https://cinelinux.com/en/2025/10/04/clapshot-a-alternativa-open-source-ao-frame-io-para-revisao-de-videos/
Haven't tested it yet, but the review seem…

There are three schools of magic. One: State a tautology, then ring the
changes on its corollaries; that's philosophy. Two: Record many facts.
Try to find a pattern. Then make a wrong guess at the next fact; that's
science. Three: Be aware that you live in a malevolent Universe controlled
by Murphy's Law, sometimes offset by Brewster's Factor; that's engineering.

Wake up sheeple.
#ShamelesslyStolenFromTheFacebook

The dark sector of the Universe as a scalar field in Horndeski Gravity
M. S. Oliveira, F. A. Brito, J. A. V. Campos
https://arxiv.org/abs/2510.08459 https://

The dark sector of the Universe as a scalar field in Horndeski Gravity
In the present work, we study a subclass of Horndeski gravity characterized by a non-minimal derivative coupling between a scalar field and the Einstein tensor, as a possible alternative to alleviate the observational tension associated with estimates of the Hubble constant $H_{0}$. Two scenarios within a flat FRW spacetime were considered. In the first case, the scalar field mimics cold dark matter, whereas in the second case, it acts as dark energy. We derive the dynamical equations and perfo…

We report the first calculation of light scattering on heavy dark matter (DM) particles: #DarkMatter, the substance that makes up most of the Universe, could potentially be detected as a red or blue light ‘fingerprint’, new research shows: https://www.york.ac.uk/news-and-events/news/2025/research/dark-matter-light-colour/

A Limit on the Total Lepton Number in the Universe from BBN and the CMB
Valerie Domcke, Miguel Escudero, Mario Fernandez Navarro, Stefan Sandner
https://arxiv.org/abs/2510.02438

A Limit on the Total Lepton Number in the Universe from BBN and the CMB
At temperatures below the QCD phase transition, any substantial lepton number in the Universe can only be present within the neutrino sector. In this work, we systematically explore the impact of a non-vanishing lepton number on Big Bang Nucleosynthesis (BBN) and the Cosmic Microwave Background (CMB). Relying on our recently developed framework based on momentum averaged quantum kinetic equations for the neutrino density matrix, we solve the full BBN reaction network to obtain the abundances of…

A look at Alan's Universe, a YouTube channel for Gen Alpha with 98.3M subscribers that releases long-form, episodic videos as viewers shift to watching on TV (New York Times)
https://www.nytimes.com/2025/12/09/arts/television/youtube-alans-universe.html

‘Alan’s Universe’ Shows What It Might Look Like to Win at YouTube
As Gen Alpha’s attention drifts from TV and movies, video creators like Alan Chikin Chow are eager to fill the void.

Early massive galaxy formation in the core of a galaxy protocluster 650 million years after the Big Bang
Yoshinobu Fudamoto, Yurina Nakazato, Daniel Ceverino, Luis Colina, Takuya Hashimoto, Akio K. Inoue, Yoichi Tamura, Naoki Yoshida, Yongda Zhu, Yuma Sugahara, Santiago Arribas, Javier 'Arvarez-M'arquez, Tom Bakx, Carmen Blanco Prieto, Luca Costantin, Alejandro Crespo G'omez, Masato Hagimoto, Takeshi Hashigaya, Hiroshi Matsuo, Rui Marques-Chaves, Ken Mawatari, Ikki Mitsuhas…

Early massive galaxy formation in the core of a galaxy protocluster 650 million years after the Big Bang
Rest-frame optical observations with the James Webb Space Telescope (JWST) have uncovered a population of massive galaxies, exceeding $10^{10}$ solar masses, present less than a billion years after the Big Bang. The large stellar masses of these galaxies require an efficient conversion of baryons into stars, which may exceed theoretical expectations. However, the formation process of massive galaxies so early in the Universe's history is perplexing, as observations provide limited information t…

Phase space analysis of an exponential model in $f(Q)$ gravity including linear dark-sector interactions
Ivan R. Vasquez, A. Oliveros
https://arxiv.org/abs/2510.12020 https://…

Phase space analysis of an exponential model in $f(Q)$ gravity including linear dark-sector interactions
We present a cosmological analysis of an exponential $f(Q)$ gravity model, within the dynamical systems formalism. Following the method introduced by Böhmer \textit{et al} [Universe \textbf{9} no.4, 166 (2023)], the modified Friedmann modified equations are successfully reduced to an autonomous system. Given the exponential form of $f(Q)$, the equilibrium conditions result in transcendental equations, which we approximate to identify the critical points. We therefore perform a general stabilit…

Evolutionary Map of the Universe: Detection of the Wolf-Rayet Star WR40
A. C. Bradley, Z. J. Smeaton, M. D. Filipovic, N. F. H. Tothill, R. Z. E. Alsaberi, J. D. Collier, Y. A. Gordon, A. M. Hopkins, H. Zakir
https://arxiv.org/abs/2510.02615

Evolutionary Map of the Universe: Detection of the Wolf-Rayet Star WR40
We present a radio-continuum detection of the well-known Wolf-Rayet star WR40 at 943.5 MHz using observations from the EMU survey. We find that the shell surrounding WR40, known as RCW 58, has a flux density of 158.9+/-15.8 mJy and the star itself is 0.41+/-0.04 mJy. The shell size is found to be 9' x 6', which matches well with the shell in Halpha and is similarly matched to the shell at 22 um in infrared. Using Gaia data, we derive a linear size of 7.32(+/-0.34) x 4.89(+/-0.23) pc at a distan…

Hubble Constant and Mass Determination of Centaurus A and M83 from TGRB Distances
Adrian Faucher, David Benisty, David F. Mota
https://arxiv.org/abs/2510.09190 https://

Hubble Constant and Mass Determination of Centaurus A and M83 from TGRB Distances
An independent determination of the Hubble constant is crucial in light of the persistent tension between early- and late-Universe measurements. In this study, we analyze the dynamics of the Centaurus A (CenA) and M83 galaxies, along with their associated dwarf companions identified via Tip of the Red Giant Branch (TRGB) distance measurements, to constrain both the group mass and the local value of $H_0$. By examining the motions of these galaxies relative to the system's barycenter, we apply b…

Probing the cosmological 21~cm global signal from the Antarctic ice sheet
Shijie Sun, Jiaqin Xu, Minquan Zhou, Shenzhe Xu, Fengquan Wu, Haoran Zhang, Juyong Zhang, Bin Ma, Zhaohui Shang, Xuelei Chen
https://arxiv.org/abs/2510.07198

Probing the cosmological 21~cm global signal from the Antarctic ice sheet
The redshifted 21 cm line, arising from neutral hydrogen, offers a unique probe into the intergalactic medium and the first stars and galaxies formed in the early universe. However, detecting this signal is a challenging task because of artificial radio-frequency interference (RFI) and systematic errors such as ground effects. The interior of the Antarctic continent provides an excellent location to make such observations, with minimal RFI and relatively stable foreground signals. Moreover, a f…

Deep imaging of the #galaxy Malin 2 shows new faint structures and a candidate satellite dwarf galaxy: https://www.aanda.org/articles/aa/abs/2025/10/aa56569-25/aa56569-25.html -> IAC research reveals hidden structures and a turbulent past in one of the largest spiral galaxies in the Universe: https://www.iac.es/en/outreach/news/iac-research-reveals-hidden-structures-and-turbulent-past-one-largest-spiral-galaxies-universe

I’ve realized that life has no built-in meaning or higher purpose. Ideas like morality and truth are things humans create to make sense of the void. The universe doesn’t care, it just exists, silent and empty, and I’ve stopped pretending it hides some secret reason for being.
Some people seem upset that I’ve turned toward existential nihilism, as if I’ve surrendered to hopelessness, yet facing the emptiness has brought me greater clarity. When you accept that no meaning has been writte…

Emission of Nambu-Goldstone bosons from the semilocal string network
Yukihiro Kanda, Naoya Kitajima
https://arxiv.org/abs/2510.07894 https://arxiv.org/pdf/…

Emission of Nambu-Goldstone bosons from the semilocal string network
Semilocal cosmic string is a line-like non-topological soliton associated with the breakdown of the $SU(2)_{\rm global} \times U(1)_{\rm gauge}$ symmetry to the $U(1)_{\rm global}$ symmetry. The broken phase has two massless Nambu-Goldstone (NG) modes as dynamical fields, and they can be emitted by semilocal strings. In this paper, we numerically show that such NG bosons are copiously produced with the evolution of the semilocal string network in the early universe. Our numerical analysis shows…

Anchoring the Universe with Characteristic Redshifts using Raychaudhuri Equation Informed Reconstruction Algorithm (REIRA)
Shibendu Gupta Choudhury, Purba Mukherjee, Anjan Ananda Sen
https://arxiv.org/abs/2510.09602

Anchoring the Universe with Characteristic Redshifts using Raychaudhuri Equation Informed Reconstruction Algorithm (REIRA)
We study the robustness and physical implications of a set of characteristic redshifts that capture key features of the late-time Universe. Using both model-independent reconstructions as well as different dark energy (DE) parameterizations, we show that these redshifts remain stable across cosmological models and reconstruction algorithm, making them reliable geometric anchors of the expansion history. Moreover, the Alcock-Paczyński corrections at these redshift anchors are found to be unity …

Deep JWST spectroscopy of galaxies in a candidate ionized bubble at $z = 8.7$: probing reionization at pMpc scales with Ly$\alpha$ emission
Lily Whitler, Daniel P. Stark, Charlotte A. Mason, Mengtao Tang, Zuyi Chen, Ting-Yi Lu, Gonzalo Prieto-Lyon, Anne Hutter
https://arxiv.org/abs/2510.12019

Deep JWST spectroscopy of galaxies in a candidate ionized bubble at $z = 8.7$: probing reionization at pMpc scales with Ly$α$ emission
Strong Ly$α$ emission observed from galaxies when the Universe is expected to be highly neutral is thought to trace large ionized regions that facilitate the transmission of Ly$α$ through the IGM. In this work, we use deep JWST Ly$α$ spectroscopy to constrain the size of a candidate ionized bubble at $z\sim8.7$ in the EGS field, with a potential radius of $R_b=2$ physical Mpc (pMpc) or larger. We measure a photometric galaxy density and find that the volume is a factor of $\sim2.5-3.6$ overd…

A physically interesting singularity in general relativity
Bob Holdom
https://arxiv.org/abs/2510.09506 https://arxiv.org/pdf/2510.09506

A physically interesting singularity in general relativity
We explore what appears to be a very benign timelike and naked singularity of the Weyl curvature scalar. This singularity arises in an inhomogeneous generalization of the Einstein static universe. The matter energy density is everywhere finite and it vanishes at the singularity. The spacetime still enjoys causal geodesic completeness and unambiguous wave dynamics. Each singularity contributes to the Komar mass of the spacetime, and this reduces the required size of the positive cosmological con…

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

The dark matter wake of a galactic bar revealed by multichannel Singular Spectral Analysis
Jason A. S. Hunt, Michael S. Petersen, Martin D. Weinberg, Kathryn V. Johnston, Marcel Bernet, Kathryne J. Daniel, S\'oley \'O. Hyman, Adrian M. Price-Whelan, Arpit Arora, the EXP Collaboration
https://arxiv.org/abs/2510.09751

The dark matter wake of a galactic bar revealed by multichannel Singular Spectral Analysis
The Milky Way is known to contain a stellar bar, as are a significant fraction of disc galaxies across the universe. Our understanding of bar evolution, both theoretically and through analysis of simulations indicates that bars both grow in amplitude and slow down over time through interaction and angular momentum exchange with the galaxy's dark matter halo. Understanding the physical mechanisms underlying this coupling requires modelling of the structural deformations to the potential that are…

Detection of Axion Stars in Galactic Magnetic Fields
Kuldeep J. Purohit, Jitesh R. Bhatt, Subhendra Mohanty, Prashant K. Mehta
https://arxiv.org/abs/2510.11032 https://

Detection of Axion Stars in Galactic Magnetic Fields
We perform a linear mode analysis of a uniformly distributed cloud of axion-like particles (ALPs) embedded in a magnetized intergalactic medium, in order to investigate the stability of axion stars under realistic astrophysical conditions. We find that when the frequency $ω$ of transverse waves is much smaller than the collision frequency $ν_c$ of the intergalactic plasma, the conversion of ALPs into photons occurs on timescales far longer than the age of the Universe, ensuring stability of t…

The Wave Function of the Universe and Inflation
Gerasimos Kouniatalis
https://arxiv.org/abs/2510.04775 https://arxiv.org/pdf/2510.04775

The Wave Function of the Universe and Inflation
We develop a quantum-cosmological framework in which the inflationary potential emerges from the structure of the wave function of the universe rather than being postulated. Starting from the Wheeler-DeWitt equation for a flat Friedmann-Robertson-Walker minisuperspace, we express the wave function in terms of an amplitude and a phase and, in a semiclassical regime where the expansion dominates the field's evolution, separate these into purely geometric and purely field-dependent pieces. This yi…

Large-scale peculiar velocities in the #universe: https://arxiv.org/abs/2510.05340 (207 pages!) -> "The observed large-scale peculiar-velocity fields are believed to have originated as weak peculiar-velocity perturbations soon after equipartition, which have subsequently grown by structure formation and by the increasing inhomogeneity of the post-recombination universe. However, the evolution and the implications of these bulk velocity fields remain poorly understood and they are still a matter of debate."

A census of quiescent galaxies across $0.5 < z < 8$ with JWST/MIRI: Mass-dependent number density evolution of quiescent galaxies in the early Universe
Tiancheng Yang, Tao Wang, Ke Xu, Hanwen Sun, Luwenjia Zhou, Lizhi Xie, Gabriella De Lucia, Claudia del P. Lagos, Kai Wang, Fabio Fontanot, Yuxuan Wu, Shiying Lu, Longyue Chen, Michaela Hirschmann
https://

A census of quiescent galaxies across $0.5 < z < 8$ with JWST/MIRI: Mass-dependent number density evolution of quiescent galaxies in the early Universe
JWST observations reveal numerous quiescent galaxies (QGs) at high redshift ($z \sim 4-8$), challenging models of early galaxy formation and quenching. Accurate number density estimates are crucial for comparison with theory but remain uncertain. We systematically study QGs at $0.5 < z < 8$ using a mass-complete sample from the JWST/PRIMER survey with deep NIRCam and MIRI imaging. The MIRI data, probing rest-frame near-infrared at $z \sim 3-8$, are vital for robust stellar mass measurement and …

Cosmology Likelihood for Observables in \Euclid (CLOE). 1. Theoretical recipe
Collaboration, Cardone, Joudaki, Blot, Bonici, Camera, Ca\~nas-Herrera, Carrilho, Casas, Davini, Di Domizio, Farrens, Goh, Beauchamps, Ili\'c, Keil, Le Brun, Martinelli, Moretti, Pettorino, Pezzotta, S\'anchez, Sakr, Sciotti, Tanidis, Tutusaus, Ajani, Crocce, Giocoli, Legrand, Lembo, Lesci, Girones, Nouri-Zonoz, Pamuk, Tsedrik, Bel, Carbone, Duncan, Kilbinger, Lacasa, Lattanzi, Sapone, Sellentin, Tayl…

Cosmology Likelihood for Observables in \Euclid (CLOE). 1. Theoretical recipe
As the statistical precision of cosmological measurements increases, the accuracy of the theoretical description of these measurements needs to increase correspondingly in order to infer the underlying cosmology that governs the Universe. To this end, we have created the Cosmology Likelihood for Observables in Euclid (CLOE), which is a novel cosmological parameter inference pipeline developed within the Euclid Consortium to translate measurements and covariances into cosmological parameter cons…

Detecting gravitational waves with spin systems
Jiamin Liang, Mingqiu Li, Yu Gao, Wei Ji, Sichun Sun, Qi-Shu Yan
https://arxiv.org/abs/2510.11009 https://a…

Detecting gravitational waves with spin systems
The observation of gravitational waves has opened a new window into the Universe through gravitational-wave astronomy. However, high-frequency gravitational waves remain undetected. In this work, we propose that spin systems can be employed to detect gravitational waves in this unexplored frequency regime. We derive the spin's response to gravitational waves and identify three distinct effects: the well-known Gertsenshtein effect, a metric-induced interaction, and the gravitational spin Hall ef…

A two scalar triplets model as common origin for dark matter, neutrino masses, baryon asymmetry and inflation
Sin Kyu Kang, Raymundo Ramos
https://arxiv.org/abs/2510.07107 https…

A two scalar triplets model as common origin for dark matter, neutrino masses, baryon asymmetry and inflation
We propose an extension of the standard model (SM) by two SU(2) triplet scalars and an inert SU(2) doublet. We demonstrate that this setup can simultaneously produce an inflaton and baryon asymmetry in the early universe, provide a dark matter candidate and explain the smallness of neutrino masses. The two triplets are particularly important as they become mediators for the production of dark matter and the generation of lepton asymmetry, as well as contribute an inflaton. The inert doublet res…

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

Safely simplifying redshift drift computations in inhomogeneous cosmologies: Insights from LTB Swiss-cheese models
David R{\o}nne Sallingboe, Sofie Marie Koksbang
https://arxiv.org/abs/2510.09377

Safely simplifying redshift drift computations in inhomogeneous cosmologies: Insights from LTB Swiss-cheese models
One of the most important discoveries in cosmology is the accelerated expansion of the Universe. Yet, the accelerated expansion has only ever been measured {\em in}directly. Redshift drift offers a direct observational probe of the Universe's expansion history, with its sign revealing whether there has been acceleration or deceleration between source and observer. Its detection will mark a major milestone in cosmology, offering the first direct measurement of an evolving expansion rate. Given i…

Mapping the Stellar Kinematics in the Central 240 Parsecs of M87 with the James Webb Space Telescope
Refa M. Al-Amri, Jonelle L. Walsh, Emily R. Liepold, Chung-Pei Ma, Jenny E. Greene
https://arxiv.org/abs/2510.02439

Mapping the Stellar Kinematics in the Central 240 Parsecs of M87 with the James Webb Space Telescope
The supermassive black hole (SMBH) in the giant elliptical galaxy M87 is one of the most well-studied in the local universe, but the stellar- and gas-dynamical SMBH mass measurements disagree. As this galaxy is a key anchor for the upper end of the SMBH mass$-$host galaxy relations, we revisit the central $3''\times 3''$ ($\sim 240\times240$ pc) region of M87 with the Near Infrared Spectrograph (NIRSpec) integral field unit (IFU) on the James Webb Space Telescope (JWST). We implement several im…

The anisotropic expansion rate of the local Universe and its covariant cosmographic interpretation
Basheer Kalbouneh, Christian Marinoni, Roy Maartens, Julien Bel, Jessica Santiago, Chris Clarkson, Maharshi Sarma, Jean-Marc Virey
https://arxiv.org/abs/2510.02510

The anisotropic expansion rate of the local Universe and its covariant cosmographic interpretation
Without making any assumption on the underlying geometry and metric of the local Universe, we provide a measurement of the expansion rate fluctuation field using the Cosmicflows-4 and Pantheon+ samples in the redshift range $0.01 < z < 0.1$ ($30 \,h^{-1}\,\mathrm{Mpc} < R < 300\,h^{-1}\,\mathrm{Mpc}$). The amplitude of the anisotropic fluctuations is found to be of order a few percent relative to the monopole of the expansion rate. We further decompose the expansion rate fluctuation field int…

A warm ultraluminous infrared #galaxy just 600 million years after the big bang: https://academic.oup.com/mnras/article/544/2/1502/8318242?login=false -> Superheated star factory is discovered in early universe: https://ras.ac.uk/news-and-press/research-highlights/superheated-star-factory-discovered-early-universe

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

Consequences of Undecidability in Physics on the #TheoryOfEverything: #universe is a #ComputerSiimulation: https://news.ok.ubc.ca/2025/10/30/ubco-study-debunks-the-idea-that-the-universe-is-a-computer-simulation/ - new study uses logic and physics to definitively answer one of science's biggest questions.

Cloudy with a chance of starshine: Possible photometric signatures of nebular-dominated emission in $1.5 < z < 8.5$ JADES galaxies
James A. A. Trussler, Alex J. Cameron, Daniel J. Eisenstein, Harley Katz, Nathan J. Adams, Duncan Austin, Andrew J. Bunker, Stefano Carniani, Christopher J. Conselice, Mirko Curti, Emma Curtis-Lake, Kevin Hainline, Thomas Harvey, Benjamin D. Johnson, Qiong Li, Tobias J. Looser, Pierluigi Rinaldi, Brant Robertson, Fengwu Sun, Sandro Tacchella, Christin…

Cloudy with a chance of starshine: Possible photometric signatures of nebular-dominated emission in $1.5 < z < 8.5$ JADES galaxies
The discovery of high-redshift galaxies exhibiting a steep spectral UV downturn potentially indicative of two-photon continuum emission marks a turning point in our search for signatures of top-heavy star formation in the early Universe. We develop a photometric search method for identifying further nebular-dominated galaxy candidates, whose nebular continuum dominates over the starlight, due to the high ionising photon production efficiencies $ξ_\mathrm{ion}$ associated with massive star form…

Effects of the ekpyrotic mechanism on inflationary phase in loop quantum cosmologies
Christian Brown, Jared Fier, Brian Phillips, Gerald Cleaver, Anzhong Wang
https://arxiv.org/abs/2510.03907

Effects of the ekpyrotic mechanism on inflationary phase in loop quantum cosmologies
In bouncing cosmological models, either classical or quantum, the big bang singularity is replaced by a regular bounce. A challenging question in such models is how to keep the shear under control in the contracting phase, as it is well-known that the shear grows as fast as $1/a^{6}$ toward the bounce, where $a$ is the expansion factor of the universe. A common approach is to introduce a scalar field with an ekpyrotic-like potential which becomes negative near the bounce, so the effective equat…

Is Dark Energy Changing? Probing the Universe's Expansion with present and future astronomical probes
Mehdi Rezaei, Supriya Pan, Weiqiang Yang, David F. Mota
https://arxiv.org/abs/2510.09766

Is Dark Energy Changing? Probing the Universe's Expansion with present and future astronomical probes
This study explores the possibility of a time-varying dark energy (DE) equation of state (EoS) deviating from -1. We employ a comprehensive dataset of usual astronomical probes (Type Ia supernovae, baryon acoustic oscillations, Big Bang nucleosynthesis, Hubble data, and Planck 2018 CMB) alongside future mock gravitational wave (GW) distance measurements from the Einstein Telescope. We utilize the Pad'e approximation, a versatile framework encompassing well-known DE models like constant EoS, Che…

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

Large-scale peculiar velocities in the universe
Christos G. Tsagas, Leandros Perivolaropoulos, Kerkyra Asvesta
https://arxiv.org/abs/2510.05340 https://arx…

Large-scale peculiar velocities in the universe
Observations have repeatedly confirmed the presence of large-scale peculiar motions in the universe, commonly referred to as ``bulk flows''. These are vast regions of the observable universe, typically spanning scales of several hundred Mpc, that move coherently with speeds of the order of several hundred km/sec. While there is a general consensus on the direction of these motions, discrepancies persist in their reported sizes and velocities, with some of them exceeding the predictions of the s…

marvel_partnerships: Marvel character partnerships (2018)
A network of partnerships among characters in the Marvel comic book universe. Nodes are either heroes or villains, and edges represent partnerships between such characters. The partnership network was extracted from Wikipedia pages of these characters, which indicate partnership relations with other such pages.
This network has 350 nodes and 346 edges.
Tags: Social, Fictional, Unweighted

Cosmological Implications of Thermodynamic Split Conjecture
Oem Trivedi
https://arxiv.org/abs/2510.10441 https://arxiv.org/pdf/2510.10441

Cosmological Implications of Thermodynamic Split Conjecture
Building on initial work on the Thermodynamic Split Conjecture (TSC), which posits that black hole and cosmological horizon thermodynamics are generically inequivalent, we examine the consequences of that split for the Gibbons Hawking temperature and its role across cosmology. We consider many key results in both early and late universe cosmology and show that many important results such as those governing eternal inflation, vacuum tunneling, quantum breaking and primordial black holes can chan…

Elusive Plunges and Heavy Intermediate-mass-ratio Inspirals from Single and Binary Supermassive Black Holes
Lazaros Souvaitzis, Antti Rantala, Thorsten Naab
https://arxiv.org/abs/2510.09743

Elusive Plunges and Heavy Intermediate-mass-ratio Inspirals from Single and Binary Supermassive Black Holes
The most massive galaxies in the Universe also host the largest supermassive black holes (SMBHs), with masses of $10^9 \: \mathrm{M_{\odot}}$ and above. During their hierarchical assembly, these galaxies have experienced only a few major mergers at low redshift, but have accreted many low-mass galaxies across cosmic time, possibly hosting intermediate mass black holes (IMBHs). If some of these IMBHs migrate to the galactic center, they may form compact subsystems around the central SMBH. We inv…

Photon rings and shadows of Kerr black holes immersed in a swirling universe
Rogerio Capobianco, Betti Hartmann, Jutta Kunz, Nikhita Vas
https://arxiv.org/abs/2510.01937 https:/…

Photon rings and shadows of Kerr black holes immersed in a swirling universe
We discuss photon rings around as well as shadows of Kerr black holes immersed in a swirling spacetime. We find that the spin-spin interaction between the angular momentum of the black hole and the swirling of the background leads to new interesting effects as it breaks the symmetry between the upper and lower hemispheres. One of the new features of the spin-spin interaction is the existence of up to three light rings for suitable choices of the angular momentum parameter $a$ and swirling param…

Detection of supernova magnitude fluctuations induced by large-scale structure
A. Nguyen, C. Blake, R. J. Turner, V. Aronica, J. Bautista, J. Aguilar, S. Ahlen, S. BenZvi, D. Bianchi, D. Brooks, A. Carr, T. Claybaugh, A. Cuceu, A. de la Macorra, B. Dey, P. Doel, K. Douglass, S. Ferraro, J. E. Forero-Romero, E. Gazta\~naga, S. Gontcho A Gontcho, G. Gutierrez, J. Guy, K. Honscheid, C. Howlett, D. Huterer, M. Ishak, R. Joyce, R. Kehoe, A. G. Kim, A. Kremin, O. Lahav, M. Landriau, L. Le Gu…

Detection of supernova magnitude fluctuations induced by large-scale structure
The peculiar velocities of supernovae and their host galaxies are correlated with the large-scale structure of the Universe, and can be used to constrain the growth rate of structure and test the cosmological model. In this work, we measure the correlation statistics of the large-scale structure traced by the Dark Energy Spectroscopic Instrument Bright Galaxy Survey Data Release 1 sample, and magnitude fluctuations of type Ia supernova from the Pantheon+ compilation across redshifts z < 0.1. We…

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

Improved Limits on the 21 cm Signal at z = 6.5–7.0 (the Epoch of #Reionization) with the Murchison Widefield Array Using Gaussian Information: https://iopscience.iop.org/article/10.3847/1538-4357/adff80 -> Astronomers hunting for evidence of the light from the first stars and galaxies have found that the Universe was warm, rather than cold, before it “lit up”: https://www.icrar.org/eor-limit/

HR-pyPopStar II: high spectral resolution evolutionary synthesis models low metallicity expansion and the properties of the stellar populations of dwarf galaxies
I. Mill\'an-Irigoyen, M. Moll\'a, M. Cervi\~no, M. L. Garc\'ia-Vargas
https://arxiv.org/abs/2510.02886

HR-pyPopStar II: high spectral resolution evolutionary synthesis models low metallicity expansion and the properties of the stellar populations of dwarf galaxies
Low metallicity stellar populations are very abundant in the Universe, either as the remnants of the past history of the Milky Way or similar spiral galaxies, or the young low metallicity stellar populations that are being observed in the local dwarf galaxies or in the high-z objects with low metal content recently found with JWST. Our goal is to develop new high-spectral-resolution models tailored for low-metallicity environments and apply them to analyse stellar population data, particularly …

Effect of stochastic kicks on primordial black hole abundance and mass via the compaction function
Sami Raatikainen, Syksy Rasanen, Eemeli Tomberg
https://arxiv.org/abs/2510.09303

Effect of stochastic kicks on primordial black hole abundance and mass via the compaction function
We study stochastic effects in viable ultra-slow-roll inflation models that produce primordial black holes. We consider asteroid, solar, and supermassive black hole seed masses. In each case, we simulate $10^8$ patches of the universe that may collapse into PBHs. In every patch, we follow $4\times10^4$ momentum shells to construct its spherically symmetric profile from first principles, without introducing a window function. We include the effects of critical collapse and the radiation era tran…

marvel_universe: Marvel Universe social network
The Marvel Universe collaboration network, where two Marvel characters are considered linked if they jointly appear in the same Marvel comic book.
This network has 19428 nodes and 95497 edges.
Tags: Social, Fictional, Unweighted
https://networks.skewed.de/ne…

On the contribution of galaxies to the magnetic field in cosmic voids
K\'aroly Seller, G\"unter Sigl
https://arxiv.org/abs/2510.08025 https://arxi…

On the contribution of galaxies to the magnetic field in cosmic voids
Astrophysical processes can contribute to magnetic fields within cosmic voids either through magnetized outflows from the astrophysical large-scale structure or through superposition of dipolar contributions from individual galaxies. Such astrophysical magnetic fields represent a foreground to possible space-filling primordial magnetic fields seeded in the early Universe. In this paper, we provide a qualitative description of the screening of magnetic fields by intergalactic plasmas. We find th…

Slow-rolling down the curvature: a reassessment of the Planck constraints on $\phi^2$ inflation in a closed universe
Enrico Specogna, Tatevik Vardanyan, William Giar\`e, Eleonora Di Valentino
https://arxiv.org/abs/2509.26263

Slow-rolling down the curvature: a reassessment of the Planck constraints on $ϕ^2$ inflation in a closed universe
We revisit the Cosmic Microwave Background (CMB) constraints on the spatial curvature of the Universe, assessing how they change when the curvature parameter and the primordial inflationary scalar spectrum are treated consistently within theoretically motivated frameworks. Instead of relying on the phenomenological parametrisation commonly used to capture curvature effects at the largest scales, we present a case study based on closed quadratic inflation, where the primordial spectrum is derive…

Cosmic topology. Part IIb. Eigenmodes, correlation matrices, and detectability of non-orientable Euclidean manifolds
Craig J. Copi (COMPACT Collaboration), Amirhossein Samandar (COMPACT Collaboration), Glenn D. Starkman (COMPACT Collaboration), Javier Carr\'on Duque (COMPACT Collaboration), Yashar Akrami (COMPACT Collaboration), Stefano Anselmi (COMPACT Collaboration), Andrew H. Jaffe (COMPACT Collaboration), Arthur Kosowsky (COMPACT Collaboration), Fernando Cornet-Gomez (COMPACT C…

Cosmic topology. Part IIb. Eigenmodes, correlation matrices, and detectability of non-orientable Euclidean manifolds
If the Universe has non-trivial spatial topology, observables depend on both the parameters of the spatial manifold and the position and orientation of the observer. In infinite Euclidean space, most cosmological observables arise from the amplitudes of Fourier modes of primordial scalar curvature perturbations. Topological boundary conditions replace the full set of Fourier modes with specific linear combinations of selected Fourier modes as the eigenmodes of the scalar Laplacian. In this pape…

Primordial Black Holes and their Mass Spectra: The Effects of Mergers and Accretion within Stasis Cosmologies
Keith R. Dienes, Lucien Heurtier, Fei Huang, Tim M. P. Tait, Brooks Thomas
https://arxiv.org/abs/2510.06551

Primordial Black Holes and their Mass Spectra: The Effects of Mergers and Accretion within Stasis Cosmologies
A variety of processes in the very early universe can give rise to a population of primordial black holes (PBHs) with an extended mass spectrum. For certain mass spectra of this sort, it has been shown that the evaporation of these PBHs into radiation can drive the universe toward an epoch of cosmological stasis which can persist for a significant number of $e$-folds of cosmological expansion. However, in general, the initial mass spectrum which characterizes a population of PBHs at the time of…