Light Curves of Gamma‐Ray Burst Optical Flashes | Zendy

S. Kobayashi | Zendy

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Light Curves of Gamma‐Ray Burst Optical Flashes

Author(s) -

S. Kobayashi

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/317869

Subject(s) - gamma ray burst , light curve , physics , astrophysics , shock (circulatory) , flash (photography) , synchrotron radiation , afterglow , synchrotron , radiation , astronomy , optics , medicine

The standard model of GRB afterglows assumes that relativistically expandingmaterial is decelerating due to interaction with the surrounding medium. Theafterglows are well described by the synchrotron radiation from a forwardshock, while the strong optical flash associated with GRB 990123 can beattributed to the emission from a reverse shock. We give a detailed study onthe reverse shock emission. The full light curves are calculated for a long anda short GRB cases. We discuss the lack of the prompt optical detections byROTSE for GRB 981121 and GRB 981223.Comment: 18 pages, 6 figures, ApJ 545 in pres

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