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astro-ph.HE2026

Las Cumbres Observatory Gravitational-Wave Follow-up in the Third and Fourth Observing Runs: Strengths and Weaknesses of a Rapid Response Galaxy Targeted Strategy

Ido Keinan, Iair Arcavi, D. Andrew Howell +34

We present a summary of gravitational-wave (GW) follow-up using the Las Cumbres Observatory global network of telescopes during the third (O3) and fourth (O4) observing runs of the…

astro-ph.HE2026

ATLAS100 -- I. A volume-limited sample of supernovae and related transients within 100 Mpc

Shubham Srivastav, Stephen J. Smartt, Thomas Moore +29

We present ATLAS100 -- a sample of 1729 supernovae and other explosive optical transients within Mpc observed by the ATLAS survey over a span of 5.75 years from 2017 Sep…

astro-ph.HE2026★ 1 cited

Probing the Diversity of Type Ia Supernova Remnants in 3-D Hydrodynamic Simulations with X-ray Spectral Synthesis

Yusei Fujimaru, Shiu-Hang Lee, Gilles Ferrand +7

Type Ia supernovae (SNe), thermonuclear explosions of white dwarfs in binary systems, are widely used as standard candles owing to the empirical width-luminosity relation of their…

astro-ph.HE2025★ 2 cited

Electron Cyclotron Maser Emission as the Driving Mechanism in Long-Period Radio Transients

Lilia Ferrario

Long-period radio transients (LPRTs) are highly polarised, coherent radio sources with periods of minutes to hours and bursts typically lasting 10 to 100 s. Here we consider the ap…

astro-ph.HE2025

Analysis and implications of the spatio-spectral morphology of the Fermi Bubbles

Ami Tank, Roland Crocker, Mark R. Krumholz

The Fermi Bubbles are gamma-ray structures extending from the center of the Milky Way to +/-50 degree Galactic latitude that were discovered in data obtained by the Fermi/LAT instr…

astro-ph.HE2025★ 2 cited

Spectropolarimetry of synchrotron radiation from relativistic electrons with anisotropic pitch-angle and various energy distributions

Paul C. W. Lai, Kaye J. Li, Y. X. Jane Yap +2

For synchrotron radiation from relativistic electrons having a power-law energy distribution with a power-law index in an optically thin medium with a locally uniform magnetic…