A close correlation between the spectral lags and redshifts of gamma-ray bursts

被引：4
|
作者：
Yi, Ting-Feng [1 ]
Xie, Guang-Zhong [2 ]
Zhang, Fu-Wen [2 ,3 ]
机构：
[1] Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China
[2] Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China
[3] Chinese Acad Sci, Yunnan Astron Ctr, Beijing 100049, Peoples R China
来源：
CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS | 2008年 / 8卷 / 01期
关键词：
gamma-rays : bursts; gamma-rays : observations; methods : statistical;
D O I：
10.1088/1009-9271/8/1/08
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Based on nine BATSE GRBs with known redshifts, we found that the maximum spectral lag of all the pulses in a gamma-ray burst (GRB) appears to be anti-correlated with the redshift of the burst. In order to confirm this finding, we analyzed 10 GRBs detected by HETE-2 with known redshifts and found a similar relation. Using the relation, we estimated the redshifts of 878 long GRBs in the BATSE catalog, then we investigated the distributions of the redshifts and 869 E-iso, of these GRBs. The distribution of the estimated redshifts is concentrated at z = 1.4 and the distribution of E-iso peaks at 10(52.5) erg. The underlying physics of the correlation is unclear at present.
引用
收藏
页码：81 / 86
页数：6
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