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astro-ph.HE2026
Earliest simultaneous multi-color optical observations of GRB 230328B: from 41 seconds to the host-galaxy identification
T. Komesh, A. Pozanenko, N. Pankov +36
We present a multiwavelength study of the long-duration gamma-ray burst GRB 230328B, combining prompt gamma-ray observations with exceptionally early simultaneous optical photometr…
astro-ph.HE2020
GRB 140423A: A Case of Stellar Wind to Interstellar Medium Transition in the Afterglow
Long Li, Xiang-Gao Wang, WeiKang Zheng +14
We present very early ground-based optical follow-up observations of GRB~140423A, which was discovered by \emph{Swift}/BAT and by {\it Fermi}/GBM. Its broadband afterglow was monit…