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 6
High-frequency water megamasers as precision probes of black holes, galaxies and cosmology: A case for a next-generation sub-mm/mm interferometer
Water megamasers in the circumnuclear disks of active galactic nuclei are among the most precise probes of supermassive black holes.How do late-time photons "record" primordial curvature perturbations?
Inflationary cosmology faces a fundamental gap between primordial quantum fluctuations and the classical cosmic history inferred from observations.specwizard: A Public Python Framework for Creating Synthetic Absorption Spectra from Hydrodynamical Simulations
We present specwizard, a publicly available modular Python package for generating synthetic absorption spectra from hydrodynamical simulations.A Step-Like Transition Underlying the Life and Death of Galaxies
How galaxies stop forming stars is a complex and central problem in astrophysics.Can bosenovae deplete the galactic dark matter?
No: neither through the bosenovae of gravitational atoms formed around stars and compact objects, nor through those of boson stars formed in the galactic dark-matter halo.Binary-lens amplification of starlight: from magnification flares to quasi-periodic tracking of orbital evolution
Supermassive black hole binaries (SMBHB) are expected at the center of galaxies as a result of galaxy mergers.Efficient numerical evolution of self-gravitating systems with dark-matter-baryon scattering
We present a fast algorithm to numerically evolve a spherically symmetric system consisting of dark matter and gas, including dark-matter-baryon scattering.Tracing small-scale structure formation through cosmic time with strong gravitational lensing: A case for a next-generation sub-millimetre/millimetre interferometer
The nature of dark matter and the growth of supermassive black holes (SMBHs) remain major open questions in modern astrophysics.A model for the ongoing subcluster interaction in Centaurus
Intracluster globular clusters (GCs) preserve the hierarchical and chemical history of galaxy cluster assembly.Self Calibrated Galaxy Groups from the DESI DR1 Bright Galaxy Survey
We present a galaxy group catalog built from Data Release 1 of the Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Survey, using the Self Calibrated Group Finder.Non-equilibrium chemistry and radiation hydrodynamics in metal-poor and metal-rich interstellar gas
We present a flexible implementation of non-equilibrium chemical networks with the $\texttt{KROME}$ framework, coupled to a nonlocal variable Eddington tensor-closed radiation transport scheme…The ePESSTO+ census of ZTF nuclear transients. I. What flares in galactic nuclei?
Transients in galactic nuclei arise from distinct processes, only some of which trace the supermassive black hole (SMBH).TNGC-SIDM I: Evolution of massive cluster mergers under the self-interacting dark matter paradigm
Merging galaxy clusters provide an ideal laboratory for testing the self-interacting nature of dark matter.The Dance of the Little Red Dots: Spectroscopy of Two Blue Companions at z = 3.9 and 5.5 Reveals Young, Metal-Poor Starbursts Merging with Their LRDs within a Few Hundred Myr
The Little Red Dots (LRDs) are compact, red sources, abundant at $4 \lesssim z \lesssim 9$ and likely powered by massive black holes.The connection between massive galaxies and their dark matter haloes from $z=0.25$ to $z \sim 4$ from the combined COSMOS, XMM-LSS and ECDF-S fields
Understanding how galaxies populate and grow within dark matter haloes is essential for linking the observed evolution of galaxies to the hierarchical growth of structure.The Contribution of Mergers and Accretion to Dark Matter Halo Assembly: An Excursion Set Theory Approach
We study the relative contributions of mergers and accretion to the assembly of dark matter haloes within the framework of Excursion Set Theory (EST).$\texttt{NFDiag}$: High-dimensional MCMC Convergence Diagnosis with Normalizing Flows
Accurately assessing the convergence of Monte Carlo Markov Chains is crucial for ensuring their validity in Bayesian inference problems.Indirect Dark Matter Detection in the Multi-Messenger Era: Experiments, Systematics, Anomalies, and Prospects for Discovery
Indirect searches for dark matter (DM) span gamma rays, charged cosmic rays, neutrinos, X-rays, radio emission, the cosmic microwave background (CMB), and the 21~cm signal, but reported constraints…The Cosmic Radio Dipole and Observer Effects in SKA all-sky surveys
The Square Kilometre Array (SKA) will observe our Universe on the largest scales and so enable the study of fundamental assumptions in cosmology, such as cosmic homogeneity and isotropy.Interpreting the stacked kinetic SZ signal II: the degeneracy between satellite galaxies and baryonic feedback
The kinetic Sunyaev-Zel'dovich (kSZ) signal stacked around a galaxy sample traces the gas around halos and is a powerful probe of baryonic feedback.