3 papers
astro-ph.HE2025
Double-Peaked Optical Afterglow in GRB 110213A Inferring a Magnetized Thick Shell Ejecta
Yo Kusafuka, Kaori Obayashi, Katsuaki Asano +1
Gamma-ray bursts early afterglows are important tracers for determining the radial structure and magnetization of the ejecta. In this paper, we focus on GRB 110213A that shows doub…
astro-ph.HE2025
Unifying Circumstellar Environment in Broad-Lined Type Ic Radio Supernovae Towards Off-axis Gamma-Ray Burst Exploration
Yo Kusafuka, Tomoki Matsuoka, Ryo Sawada
Decades have passed since the first confirmed association between a broad-lined Type Ic supernova (Type IcBL SN) and a long gamma-ray burst (GRB), and the number of known GRB-SN as…
astro-ph.HE2025
TeV Afterglow of BOAT GRB without Jet Break
Yo Kusafuka, Katsuaki Asano
We present a new model for the TeV afterglow of GRB 221009A. The rapid increase of the TeV flux in the very early phase is reproduced by the magnetic acceleration. We consider the…