USING GAMMA-RAY BURSTS TO DETECT A COSMOLOGICAL DENSITY OF COMPACT OBJECTS

被引：40
作者：
BLAES, OM
WEBSTER, RL
机构：
[1] Can. Inst. for Theor. Astrophysics, University of Toronto, Toronto, Ont. M5S 1A7
[2] School of Physics, University of Melbourne, Parkville
来源：
ASTROPHYSICAL JOURNAL | 1992年 / 391卷 / 02期
关键词：
COSMOLOGY; THEORY; DARK MATTER; GAMMA-RAYS; BURSTS; GRAVITATIONAL LENSING;
D O I：
10.1086/186399
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
If gamma-ray bursts come from cosmological distances, then a significant fraction of them will be lensed. Multiple images will be detected by the time delays between the two images. The shortest bursts are sensitive to lens masses greater-than-or-similar-to 250 M.. The observed fraction of double images provides a direct measure of OMEGA(compact) as a function of the assumed maximum redshifts of the burst sources. The results depend weakly on the cosmological model and the burst spectra.
引用
收藏
页码：L63 / L66
页数：4
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