Extrapolations of BATSE Gamma‐Ray Burst Spectra to the Optical‐Ultraviolet Band
Open Access
- 20 December 1996
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 473 (2) , 1013-1019
- https://doi.org/10.1086/178211
Abstract
Many gamma-ray burst counterpart searches are being conducted in the optical-UV band. To both predict detectability and understand the meaning of any detections or upper limits, we extrapolate gamma-ray spectra from 54 bright gamma-ray bursts to optical-UV energies. We assume optical emission is concurrent with gamma-ray emission and do not consider quiescent or fading counterparts. We find that the spectrum must be steeper (greater flux at low energy) than a simple extrapolation of the gamma-ray spectrum for more than one simultaneous optical flash to be observable per year by current searches.Keywords
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