3 papers
astro-ph.HE2025
SN 2019vxm: A Shocking Coincidence between Fermi and TESS
Zachary G. Lane, Ryan Ridden-Harper, Sofia Rest +37
Shock breakout and, in some cases, jet-driven high-energy emission are increasingly recognized as key signatures of the earliest phases of core-collapse supernovae, especially in T…
astro-ph.GA2024
A Novel Test for MOND: Gravitational Lensing by Disc Galaxies
Christopher Harvey-Hawes, Marco Galoppo
Disc galaxies represent a promising laboratory for the study of gravitational physics, including alternatives to dark matter, owing to the possibility of coupling rotation curves'…
gr-qc2024
Kerr--Newman Memory Effect
Marco Galoppo, Rudeep Gaur, Christopher Harvey-Hawes
We bring the Kerr--Newman spacetime into the Bondi--Sachs gauge by means of zero angular momentum, null geodesics. We compute the memory effect produced at the black hole horizon b…