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

页码：L63 / L66

页数：4

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