Gravitational lensing by a charged black hole of string theory

被引：188

作者：

Bhadra, A ^{[1
]}

机构：

[1] Univ N Bengal, High Energy & Cosm Ray Res Ctr, Siliguri 734430, India

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.67.103009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study gravitational lensing by the Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) charged black hole of heterotic string theory and obtain the angular position and magnification of the relativistic images. Modeling the supermassive central object of the galaxy as a GMGHS black hole, we estimate the numerical values of different strong-lensing parameters. We find that there is no significant string effect present in the lensing observables in the strong-gravity scenario.

引用

页数：6

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