The hardness evolution of gamma-ray burst pulses

被引：11
|
作者：
Crider, A
Liang, EP
Preece, RD
Briggs, MS
Pendleton, GN
Paciesas, WS
Band, DL
Matteson, JL
机构：
[1] Rice Univ, Dept Space Phys & Astron, Houston, TX 77005 USA
[2] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA
[3] Univ Calif San Diego, Ctr Astrophys & Space Sci 0424, La Jolla, CA 92093 USA
来源：
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 138卷 / 03期
关键词：
gamma-ray; bursts; observations;
D O I：
10.1051/aas:1999280
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have analyzed the evolution of the spectral hardness parameter, E-pk (the maximum of the nu F-nu spectrum) as a function of fluence in gamma-ray bursts. We fit 41 pulses within 26 bursts with the trend reported by Liang & Kargatis (1996) which found that E-pk decays exponentially with respect to photon fluence Phi(t). We also fit these pulses with a slight modification of this trend, where E-pk decays linearly with energy fluence. In both cases, we found the set of 41 pulses to be consistent with the trend.
引用
收藏
页码：401 / 402
页数：2
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