collaborators

7 papers

astro-ph.HE2025

Evidence for a hot galactic halo around the Andromeda Galaxy using fast radio bursts along two sightlines

Reshma Anna-Thomas, Casey J. Law, Eric W. Koch +17

Fast Radio Bursts (FRBs) are millisecond-duration radio transients that serve as unique probes of ionized extragalactic matter. We report the discovery and localization of two FRBs…

astro-ph.HE2025

Exploring the Relationship Between Swift Short Gamma-Ray Burst Afterglows and their Host Galaxy Properties

Cristian Castrejon, Anya E. Nugent, Wen-fai Fong +3

We present a comprehensive compilation of short-duration gamma-ray burst (GRB) afterglows in the X-ray, optical, and radio bands, comprising 150 events discovered primarily by the…

astro-ph.HE2025

White dwarf-neutron star binaries: a plausible pathway for long-duration gamma-ray bursts from compact object mergers?

A. A. Chrimes, N. Gaspari, A. J. Levan +7

Two long-duration gamma-ray bursts were recently discovered with kilonovae, the signature of r-process element production in a compact binary merger, rather than supernovae. This h…

astro-ph.HE2025

A fast radio burst from the first 3 billion years of the Universe

Manisha Caleb, Themiya Nanayakkara, Benjamin Stappers +25

Fast radio bursts (FRBs) are enigmatic millisecond-duration signals which encode otherwise unattainable information on the plasma which permeates our Universe, providing insights i…

astro-ph.HE2025

Binary neutron star merger offsets from their host galaxies II. Short-duration gamma-ray bursts

N. Gaspari, A. J. Levan, A. A. Chrimes +1

The mergers of binary neutron stars (BNSs) and neutron star-black holes (NSBHs) binaries have long been linked to short-duration gamma-ray bursts (SGRBs). However, despite their st…

astro-ph.HE2025

Where has all the -process gone? Timescales for GRB-Kilonovae to Enrich their Host Galaxies

Anya E. Nugent, Alexander P. Ji, Wen-fai Fong +2

Neutron star (NS) mergers are currently the only observed source of -process production in the Universe. Yet, it is unclear how much -process mass from these mergers is incor…