Physical Model of Gamma-Ray Burst Spectral Evolution
Open Access
- 10 April 1997
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 479 (1) , L35-L38
- https://doi.org/10.1086/310568
Abstract
We propose a physical model of gamma-ray burst spectral evolution in which impulsively accelerated nonthermal leptons cool by saturated Compton upscattering of soft photons. This model naturally explains the recently discovered exponential decay of the spectral break energy with photon fluence, the hard-to-soft spectral evolution patterns, and other spectral and temporal properties of gamma-ray bursts.Keywords
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