PHYSICAL MODEL OF GAMMA-RAY BURST SPECTRAL EVOLUTION

Authors
LIANG E KUSUNOSE M SMITH IA CRIDER A
Citation
E. Liang et al., PHYSICAL MODEL OF GAMMA-RAY BURST SPECTRAL EVOLUTION, The Astrophysical journal, 479(1), 1997, pp. 35-38
Citations number
23
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astrophysical journal → ACNP
ISSN journal
0004637X
Volume
479
Issue
1
Year of publication
1997
Part
2
Pages
35 - 38
Database
ISI
SICI code
0004-637X(1997)479:1<35:PMOGBS>2.0.ZU;2-2
Abstract
We propose a physical model of gamma-ray burst spectral evolution in w hich impulsively accelerated nonthermal leptons cool by saturated Comp ton upscattering of soft photons. This model naturally explains the re cently discovered exponential decay of the spectral break energy with photon fluence, the hard-to-soft spectral evolution patterns, and othe r spectral and temporal properties of gamma-ray bursts.