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astro-ph.HE2026
Detection of 2 MeV spectral bump and ~40 MeV emission line from GRB 221009A
Zhi-Qiang Ding, Zhenxia Zhang, Yanqiu Zhang +47
Gamma-ray bursts (GRBs) are the most energetic transients in the Universe, but prompt MeV--sub-GeV observations remain challenging with current gamma-ray observatories. Here, using…
astro-ph.HE2026
Double-Shock Radiation in Supernova Wind Breakout and EP260321a
Zhuo Li, Rui-Ze Shi, Qiang Wang
We study the supernova (SN) shock breakout (SBO) from an optically thick stellar wind. The SN ejecta-wind interaction forms a forward shock (FS) plus reverse shock (RS) structure.…