Gravitational Lensing Effects in a Modified General Relativity Model

被引：17
作者：
A.-M.M. Abdel-Rahman
机构：
[1] University of Khartoum,Department of Physics, Faculty of Science
来源：
Astrophysics and Space Science | 2001年 / 278卷 / 4期
关键词：
General Relativity; Modify General; Matter Density; Cosmological Model; Optical Depth;
D O I：
10.1023/A:1013151416526
中图分类号：
学科分类号：
摘要：
We investigate the effects of gravitational lensing in a modified generalrelativity flat cosmological model. We show that the predicted lensingprobability for low matter densities is larger than in the Einstein-deSitter model but considerably less than in constant-Λ models. Wealso find that the optical depth at low density rises with the sourcered-shift more slowly than in constant-Λ models and that the lensdistribution peaks at lower values of the lens red-shift.
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页码：385 / 385
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