Gravitational lensing in braneworld gravity: formalism and applications

被引：32

作者：

Pal, Supratik ^{[1
]}

Kar, Sayan ^{[2
]}

机构：

[1] Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India

[2] Indian Inst Technol, Ctr Theoret Studies, Dept Phys, Kharagpur 721302, W Bengal, India

来源：

CLASSICAL AND QUANTUM GRAVITY | 2008年 / 25卷 / 04期

关键词：

D O I：

10.1088/0264-9381/25/4/045003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we develop a formalism which is different from the standard lensing scenario and is necessary for understanding lensing by gravitational fields which arise as solutions of the effective Einstein equations on the brane. We obtain general expressions for measurable quantities such as time delay, deflection angle, Einstein ring and magnification. Subsequently, we estimate the deviations (relative to the standard lensing scenario) in the above-mentioned quantities by considering the line elements for clusters and spiral galaxies obtained by solving the effective Einstein equations on the brane. Our analysis reveals that gravitational lensing can be a useful tool for testing braneworld gravity as well as the existence of extra dimensions.

引用

页数：14

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