3 papers
astro-ph.HE2025
Systematic Investigation into Radio Supernovae with Markov Chain Monte Carlo Analysis: Implications for Massive Stars' Mass Loss and Shock Acceleration Physics
Tomoki Matsuoka, Keiichi Maeda, Shigeo S. Kimura +1
We present a systematic analysis of radio supernovae (SNe) to investigate the statistical tendencies of SN progenitors' mass-loss rates and shock acceleration efficiencies. We cond…
astro-ph.HE2025
The First Search for Optical Transient as a Counterpart of a Month-timescale IceCube Neutrino Multiplet Event
Seiji Toshikage, Shigeo S. Kimura, Nobuhiro Shimizu +4
Optical transients with timescale of months, such as supernovae (SNe) and tidal disruption events (TDEs), are candidates of high-energy neutrino sources. Multiple neutrino detectio…
astro-ph.HE2025
EP240414a: A Gamma-Ray Burst Jet Weakened by an Extended Circumstellar Material
Hamid Hamidani, Yuri Sato, Kazumi Kashiyama +3
The recent Einstein Probe (EP) event EP240414a exhibits several unusual observational features. Its prompt and afterglow emissions place it between long gamma-ray bursts (LGRBs) an…