paper

Gravitational lensing by a charged black hole of string theory

arXiv:gr-qc/0306016 · doi:10.1103/PhysRevD.67.103009

Abstract

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.

6 pages

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