THE DISTRIBUTION OF COSMOLOGICAL GAMMA-RAY BURSTS

被引：55
|
作者：
COHEN, E
PIRAN, T
机构：
[1] Racah Institute for Physics, Hebrew University, Jerusalem
来源：
ASTROPHYSICAL JOURNAL | 1995年 / 444卷 / 01期
关键词：
COSMOLOGY; OBSERVATION; GAMMA RAYS; BURSTS;
D O I：
10.1086/187851
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We compare the burst distribution of the BATSE-2B catalog to a cosmological distribution. The observed distribution agrees well with a cosmological one, however, it is insensitive to cosmological parameters such as Omega and Lambda. The bursts are not necessarily standard candles, and their luminosity can vary by up to a factor of 10. The maximal redshift, z(max), of bursts longer than 2 s is 2.1(-0.7)(+1), (assuming no evolution). The present data is insufficient to determine maximal redshift, z(max), of bursts shorter than 2 s.
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页码：L25 / L28
页数：4
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