IS THERE COSMOLOGICAL TIME DILATION IN GAMMA-RAY BURSTS

被引：29

作者：

BAND, DL

机构：

[1] CASS, University of California, San Diego, San Diego

来源：

ASTROPHYSICAL JOURNAL | 1994年 / 432卷 / 01期

关键词：

GAMMA-RAYS; BURSTS;

D O I：

10.1086/187502

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Norris et al. report that the temporal structure of faint gamma-ray bursts is longer than that of bright bursts, as expected for time dilation in the cosmological models of burst origin. I show that the observed trends can easily be produced by a burst luminosity function and thus may not result from cosmological effects. A cosmological signature may be present, but the tests Norris et al. present are not powerful enough to detect these signatures.

引用

页码：L23 / L26

页数：4