Astrophysics · Physics & Astronomy
High Energy Astrophysical Phenomena
The newest papers in High Energy Astrophysical Phenomena that ReadSearch has read, newest first. Each links to its own page, with its authors, date, where it was published and the original.
189 papers, from 21 September 2026 to 5 November 2026: 189 arXiv preprints.
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Newest papers, page 3
EP241021a as An Off-nuclear Month-duration Transient in a Dwarf Starburst Galaxy
EP241021a is a peculiar fast X-ray transient exhibiting a long X-ray plateau and an optical rebrightening, both challenging the traditional jet afterglow model.Contributions of massive stars and classical novae to Galactic 26Al
The radioactive isotope 26Al is believed to be mainly produced by massive stars and ejected into the interstellar medium through their winds and supernovae.ePNGCAT: the first eROSITA all-sky data release
The eROSITA telescope array aboard the joint German--Russian Spektrum-Roentgen-Gamma (SRG) mission delivered the deepest soft all-sky X-ray survey to date, scanning the entire sky more than four…Late Epoch Infrared Spectroscopy and Two-Component 3D Photoionization Modeling of Classical Nova V5668 Sgr
V5668 Sgr is an Fe II classical nova (CN) that exploded on 15 March 2015.Effects of Synchrotron Self-Absorption on Polarization Diagnostics of MHD Turbulence
Synchrotron polarization is a powerful tool for diagnosing magnetohydrodynamic (MHD) turbulence, yet prior analyses are confined to the optically thin regime, neglecting the effects of synchrotron…Local Analogs of Little Red Dots: Clues to the X-ray Weakness
A major question about JWST's little red dots (LRDs) at $z\sim4-8$ is the origin of their apparent X-ray weakness.Magnetic Reconnection Modifies Cosmic-Ray Transport in the Interstellar Medium
We present numerical magnetohydrodynamic (MHD) simulations of the interstellar medium in gravity-stratified boxes with the Piernik MHD code.A Population Synthesis Model for Odd Radio Circles Produced by Shock-Bubble Interactions
Odd Radio Circles (ORCs) are edge-brightened rings of diffuse radio emission of roughly arcminute size whose physical origin remains debated.$El\ Ascua$: An ultra-luminous, radio-loud, Compton-thick AGN at $z\sim 3.8$ hiding in plain sight revealed by MINERVA multi-band MIRI observations
Heavily dust-obscured active galactic nuclei (AGN) are crucial for understanding supermassive black hole growth.SN Ares: A Strongly Lensed Type IIb Supernova at $\mathbf{z=1.276}$ with a Predicted 70-Year Time Delay
We present the discovery of supernova (SN) Ares, a strongly lensed supernova at $z_{\rm spec}=1.276\pm0.002$ in a massive, triply imaged host galaxy behind the MACS J0308.9+2645 galaxy cluster.Initial Conditions of Magnetized AGN Accretion Disks from Cloud Capture and Disruption
Accretion onto supermassive black holes (BHs) from the ISM can occur via capture of cold gas 'clouds' (GMCs, clumps, or overdense structures).Multiwavelength Classification of Chandra Sources in Omega Centauri
We present a comprehensive study of X-ray sources in the globular cluster NGC 5139 to date.Lomb-Scargle Recovery of Periodic Binary Signals across Black Hole Mass and Cadence
Searches for periodic supermassive black hole binaries in quasar light curves rely on recovery fractions, the share of injected signals detected, which forecasts use as detection efficiencies.EP J062132.0+623837: A Multi-wavelength Study of a Changing-look Active Galactic Nucleus Discovered by Einstein Probe
EP J062132.0+623837 is a new X-ray source identified in 14-day binned survey data from the Wide-field X-ray Telescope aboard the Einstein Probe (EP).The XMM-Newton view of the DEM L36 superbubble in the Large Magellanic Cloud
We present the first multi-wavelength analysis of the DEM L36 superbubble in the Large Magellanic Cloud.An Extra-nuclear Water Maser in NGC 1106 Likely Driven By An AGN Shock: Implications for Maser-based Black Hole Mass Measurements
We present Very Large Array A-configuration ($0.13$'') 22 GHz spectral-line and continuum observations of the Swift-BAT detected Seyfert 2 galaxy, NGC 1106, aimed at localizing a water maser line…Collapsars Are Not Heavy $r$-Process Factories
Collapsar disks are proposed sources of $r$-process elements, but neutron-rich disk ejecta require gas to be both neutronized in the disk and ejected before accretion.The Galactic Center Reference Frame: A 30-Year Solution
Stellar orbits probe the metric of and mass around the Sgr A* massive black hole.Tilt, warp, and dissipation flare in hydrodynamic disks around kicked compact objects
We study the dynamical response of a hydrodynamic disk to an impulsive kick imparted to a central massive object, focusing on the global properties of the material that remains gravitationally bound.NGC 3227 Blinks: An Extreme Changing-Look Event in a Seyfert Galaxy
We report a rapid optical changing-look event in the Seyfert galaxy NGC 3227: the optical continuum faded by more than 70% and broad H-beta emission nearly disappeared within weeks, before…