GRB 021004: Reverse Shock Emission

Details GRB 021004: Reverse Shock Emission GRB 021004: Reverse Shock Emission

2002-10-28

arxiv.org/abs/astro-ph/0210584v2

Astrophys.J.582:L75-L78,2002

Astronomy and Astrophysics

Astrophysics

11 pages, 2 figures, Accepted for publication in ApJL

Scientific paper

10.1086/367691

We show that the re-brightening in the GRB 021004 optical afterglow light curve around ~ 0.1 day can be explained within the framework of the standard fireball model. The superposition of a forward and reverse shock emissions result in the peculiar behavior. With the standard values of parameters obtained in other afterglow observations, we can construct an example case in which theoretical estimates reasonably fit the broadband observations. Therefore, the peculiarity of the light curve might be a common feature in early gamma-ray burst afterglows.

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