Astrophysics · Physics & Astronomy
Cosmology & Nongalactic Astrophysics
The newest papers in Cosmology & Nongalactic Astrophysics that ReadSearch has read, newest first. Each links to its own page, with its authors, date, where it was published and the original.
206 papers, from 6 September 2026 to 5 November 2026: 206 arXiv preprints.
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Newest papers, page 10
Discovery of an isolated RELHIC Candidate: J1351+0039
We report the discovery of J1351+0039, a new isolated dark galaxy candidate identified through a blind HI survey with the Five-hundred-meter Aperture Spherical radio Telescope (FAST), combined with…Two-rung ladder: $H_0$ from Tip of the Red Giant Branch and geometric anchors alone
We infer the Hubble constant $H_0$ from the ~400 Extragalactic Distance Database hosts with a tip of the red giant branch (TRGB) distance, calibrated on the geometric anchors of the Large Magellanic…TRICEPS. I. Tracing cold gas, dust, and stars at sub-kpc scales in massive star-forming galaxies at z = 4-5
We introduce the TRICEPS (Tracing Resolved Ionized Carbon Emission in Primeval Systems) survey.SN Helios: A Multiply Imaged Type II Supernova Opening Time-Delay Cosmography beyond redshift of 3
We report the discovery and spectroscopic confirmation of SN Helios, a strongly lensed, multiply imaged Type II supernova (SN) at $z=3.34$ behind the galaxy cluster RXC J0018.5+1626.Breaking the AGB Color Degeneracy with Variability and H$_2$O: A Consistent Picture of AGB Chemistry, Dust, and the J-Region Across Environments
Resolved asymptotic giant branch (AGB) populations present many observational puzzles.Quasinormal-mode redshifts of black holes in galactic halos with radial pressures
We investigate the black-hole quasinormal mode redshifts induced by a galactic dark-matter halo with nonvanishing radial pressure.JWST evidence for a sharp "Cosmic Daybreak" at z = 15
Luminous young galaxies have been uncovered with relative ease by JWST, extending to z=14.5, so it is puzzling that deeper spectroscopy of fainter candidates now finds only interlopers.The Lumina Project: Morphology of Ionized Bubbles and Neutral Islands
The Epoch of Reionization is characterized by the nucleation, expansion, and percolation of ionized bubbles in the intergalactic medium.Differentiable astrophysics at scale: solving and differentiating ODE ensembles on the GPU
Astronomers increasingly fit their models with gradient-based methods, such as Hamiltonian Monte Carlo, which need the derivatives of the model with respect to its parameters.Bayesian Galaxy Asymmetry
Galaxy asymmetry is an efficient way to characterize galaxy morphology in atomic hydrogen 21 cm emission detections.The First Blind Survey of Intervening NaI Absorbers: Incidence and Cosmic Evolution with DESI
We present the first blind statistical survey of intervening NaI absorbers over the last $\simeq3$~Gyr using quasar spectra from the Dark Energy Spectroscopic Instrument Data Release~1.The universe as a superconductor: How to search for a photon mass
We revisit the bounds on the photon mass when it arises from an Abelian Higgs mechanism rather than a Proca term.The birth and fate of stellar clumps in super-early galaxies
(Abridged) JWST has revealed extremely compact stellar clumps in galaxies at z>6, but their formation mechanism and subsequent evolution remain uncertain.The lifetimes and properties of Little Red Dots in the AMBRA simulation
We identify and analyze the little red dots (LRDs) in the AMBRA cosmological hydrodynamic simulation, by producing mock observations of the galaxies and active galactic nuclei (AGN) between…Axions and the RR Lyrae Period-Luminosity Relation
We investigate the impact of axions on the period-luminosity relation (PLR) of RR Lyrae stars.The CAMELS-CROCODILE Simulation Suite: A New Cosmology--Astrophysics Playground for Machine Learning
We present CAMELS-CROCODILE, a suite of cosmological hydrodynamic simulations that extends the CAMELS framework with the \gadget{} smoothed particle hydrodynamics code and the Osaka feedback model.A Sample of 459 Galaxy Groups Identified from the FAST All Sky HI Survey DR2
Groups of HI-rich galaxies are key laboratories for understanding galaxy evolution and environmental effects, constructing samples of such groups is fundamental for relevant studies.StAGE: Stellar Archaeology-driven Galaxy Evolution II. Binary Black Hole Mergers in Quiescent Galaxies and their Star-forming Progenitors
We apply StAGE, a data-driven galaxy-evolution framework based on stellar archaeology, to study binary black hole (BBH) mergers in quiescent galaxies (QGs) and their star-forming progenitors.LATED: Ly$α$-anchored photometric selection of candidate metal-free and extremely metal-poor star formation from the end of reionisation to cosmic noon
Cosmological simulations allow a low-level tail of Population III (Pop III) star formation to persist to $z=2-6$.LATED: JWST integral field spectroscopy of a galaxy caught in chemical infancy at $z=4.8$ behind Abell 2744
When Population III (Pop III) star formation ended remains an open question.