Modeling the prompt optical emission of GRB 180325A: the evolution of a spike from the optical to gamma rays

0548919 - FZÚ 2022 RIV US eng J - Journal Article
Becerra, R. L. - De Colle, F. - Cantó, J. - Lizano, S. - González, R. F. - Granot, J. - Klotz, A. - Watson, A. M. - Fraija, N. - Araudo, Anabella Teresa - Troja, E. - Atteia, J. L. - Lee, W.H. - Turpin, D. - Bloom, J. S. - Boer, M. - Butler, N. R. - González, J. J. - Kutyrev, A. S. - Prochaska, J. X. - Ramirez-Ruiz, E. - Richer, M. G. - Román-Zúniga, C. G.
Modeling the prompt optical emission of GRB 180325A: the evolution of a spike from the optical to gamma rays.
Astrophysical Journal. Roč. 908, č. 1 (2021), č. článku abcd3a. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA ČR(CZ) GA20-19854S
Research Infrastructure: ELI Beamlines III - 90141
Institutional support: RVO:68378271
Keywords : astrophysics * gamma rays
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 5.521, year: 2021
Method of publishing: Open access

The transition from prompt to afterglow emission is one of the most exciting and least understood phases in gamma-ray bursts (GRBs). Correlations among optical, X-ray, and gamma-ray emission in GRBs have been explored, to attempt to answer whether the earliest optical emission comes from internal and/or external shocks. We present optical photometric observations of GRB 180325A collected with the TAROT and RATIR ground-based telescopes. These observations show two strong optical flashes with separate peaks at ~50 and ~120 s, followed by a temporally extended optical emission. We also present X-rays and gamma-ray observations of GRB 180325A, detected by the Burst Alert Telescope and X-ray Telescope, on the Neil Gehrels Swift observatory, which both observed a narrow flash at ~80 s.
Permanent Link: http://hdl.handle.net/11104/0324968