Light Curves of GRB Optical Flashes

Details Light Curves of GRB Optical Flashes Light Curves of GRB Optical Flashes

2000-09-20

arxiv.org/abs/astro-ph/0009319v1

Astronomy and Astrophysics

Astrophysics

18 pages, 6 figures, ApJ 545 in press

Scientific paper

10.1086/317869

The standard model of GRB afterglows assumes that relativistically expanding material is decelerating due to interaction with the surrounding medium. The afterglows are well described by the synchrotron radiation from a forward shock, while the strong optical flash associated with GRB 990123 can be attributed to the emission from a reverse shock. We give a detailed study on the reverse shock emission. The full light curves are calculated for a long and a short GRB cases. We discuss the lack of the prompt optical detections by ROTSE for GRB 981121 and GRB 981223.

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