Redshift distribution of gamma-ray bursts and star formation rate
Redshift distribution of gamma-ray bursts and star formation rate
复制标题
伽马射线暴的红移分布和恒星形成率
DOI：
10.1051/0004-6361:20053807
复制
发表时间：
2006
影响因子：
6.5
通讯作者：
I. Horvath
中科院分区：
文献类型：
--
作者：
A. Mészáros;Z. Bagoly;L. Balázs;I. Horvath
目标。将BATSE星表中收集的伽玛暴红移分布与恒星形成速率进行了比较。我们的目的是澄清它们之间的一致性。我们还研究了连续数密度单调增加到红移\simeq（6−20）的情况。
方法。采用了一种与伽马射线暴模型无关的方法。研究了短子群和长子群
分别。
结果。长爆发的红移分布可能与恒星形成速率成正比。对于短脉冲，这种情况也可能发生，但比例不太明显。对于长脉冲，单调增加的情况也不太可能发生，但仍然可能发生。对于短脉冲，这种选择似乎被排除在外。
Aims. The redshift distribution of gamma-ray bursts collected in the BATSE Catalog is compared with the star formation rate.We aim to clarify the accordance between them. We also study the case of comoving number density of bursts monotonously increasing up to redshift \simeq �(6−20).
Methods. A method independent of the models of the gamma-ray bursts is used. The short and the long subgroups are studied
separately.
Results. The redshift distribution of the long bursts may be proportional to the star formation rate. For the short bursts this can also happen, but the proportionality is less evident. For the long bursts the monotonously increasing scenario is also less probable but still can occur. For the short bursts this alternative seems to be excluded.