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 7
Widespread steep X-ray spectra of luminous $z\simeq5.85-7.6$ quasars and their implications for future X-ray surveys
Luminous quasars (QSOs) at the Epoch of Reionization (EoR, $z\gtrsim6$) host billion-solar-mass black holes assembled within the first Gyr of cosmic time.X-ray spectral scaling of black hole mass in quasi-periodic eruptive source RX J1301.9+2747
We present a spectral and timing analysis of X-ray emission from the actively accreting supermassive black hole (SMBH) in RX~J1301.9+2747 with prominent quasi-periodic eruptions (QPEs) using {\it…Reflex instabilities I: Boundaries makes grid-based disc simulations frame-dependent
If the mass distribution within an accretion disc is asymmetric, it will exert a gravitational pull on its central object.Reflex instabilities II: The reflex motion of the central object drives at least seven instabilities in accretion discs
This series of papers studies the stability of accretion discs to the reflex motion of the central object under the gravitational pull of the disc itself.Extreme Stellar Death and Galaxy Feedback at z = 2: A Rest-frame Ultraviolet Characterization of the Strongly Lensed Superluminous Supernova 2025wny
We present photometric and spectroscopic follow-up observations of the strongly-lensed H-poor superluminous supernova (SLSN) 2025wny at $z = 2.0155$.Modeling the nanohertz gravitational wave background with the t-process: Improved frequentist analysis of gravitational-wave power
Pulsar timing array (PTA) collaborations have recently reported evidence for a gravitational wave background (GWB) signal in the nanohertz band, which most likely originates from the incoherent…A method for multimodal analysis of TAIGA experiment data using essential features
The aim of processing and analyzing experimental data from physical experiments is to obtain physically significant information about the phenomenon under study.Unravelling the Nature of AT 2025abao: From Precursor to Final Fate
Luminous red novae (LRNe) are potential signatures of common envelope evolution (CEE), a critical yet poorly understood phase in compact binary formation.From the Milky Way to the Early Universe: How Metallicity Shapes the Formation of Double Neutron Stars
Among the compact binaries detected through gravitational wave (GW) emission, double neutron stars (DNSs) hold the unique distinction of having well-characterized local analogs in the Milky Way.Detection of knots in the supernova type Iax remnant Pa 30
We present deep, narrowband Gemini North/GMOS images of the Pa 30 nebula that reveal rich small-scale structure in the ejecta filaments.Uncovering the Physical Origins of Black Holes in the Milky Way for Astronomical Surveys
The observational landscape of stellar-mass black holes (BHs) in the Milky Way is expanding beyond X-ray binaries, with Gaia DR4 and Roman expected to open new windows onto BH populations.Magnus: neutrino oscillation probabilities for any Hermitian Hamiltonian, any number of flavors, and any matter profile
Interpreting neutrino oscillation measurements requires computing the probability that a neutrino born with one flavor is detected with another.A spatially resolved view of Fast Radio Burst host metallicities with Integral-field Spectroscopy
Magnetar sources are the leading theory for Fast Radio Burst (FRB) progenitors.Large offsets of double-neutron-star mergers: degeneracies and implications for host associations
The projected offset of a Gamma-Ray Burst (GRB) from its host galaxy is an important diagnostic of its physical origin, where the host associations are usually evaluated through chance-coincidence…A Brush with Turbulence: Probing the ICM Dynamics in the Merging Toothbrush Cluster using XRISM
The Toothbrush Cluster (1RXS J0603.3+4214) is known for its northern radio relic, radio halo, and highly disturbed X-ray morphology.The Virgo Cluster as a Case Study for Ancient Cosmic Ray Halos in Radio and X-rays
Virgo is the nearest cool core (CC) galaxy cluster, and is archetypal of the class of X-ray weak CCs.A concordance model of neutron star kicks
Neutron stars (NSs) receive natal kicks during supernovae that affect their survival in binaries and motion through the Galaxy.Relaxation of a Vlasov gas to an inhomogeneous state due to phase space mixing in an axisymmetric potential: A Newtonian analogy of the Kerr orbital motion
We explore the dynamics of a Vlasov gas propagating in an external axisymmetric potential consisting of a central potential with an additional quadrupolar component which gives rise to two potential…Chemical complexity in feedback from supernova remnants: first detection of PO+ in IC443 and W44
Supernova remnant (SNR) may shape the physical and chemical properties of star formation.25 Years of Mrk 421 with XMM-Newton: Unveiling Structured Jets and Energy-Dependent Escape
We present a long-term X-ray spectral and timing analysis of the TeV blazar Mrk~421 based on nearly a quarter century of archival \textit{XMM-Newton}/pn observations obtained between 2000 and 2025.