Gravitational lensing by a charged black hole of string theory

被引：179
|
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.
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页数：6
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