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arxiv: gr-qc/0306016 · v1 · submitted 2003-06-04 · 🌀 gr-qc · astro-ph· hep-th

Gravitational lensing by a charged black hole of string theory

A. Bhadra This is my paper
classification 🌀 gr-qc astro-phhep-th
keywords blackholelensingstringchargedgmghsgravitationaltheory
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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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