Time Delay in Gravitational Lensing by a Charged Black Hole of String Theory

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We calculate the time delay between different relativistic images formed by the gravitational lensing produced by the Gibbons-Maeda-Garfinkle-Horowitz-Stromiger (GMGHS) charged black hole of heterotic string theory. Modeling the supermassive central objects of some galaxies as GMGHS black holes, numerical values of the time delays are estimated and compared with the correspondient Reissner-Nordstrom black holes . The time difference amounts to hours, thus being measurable and permiting to distinguish between General Relativity and String Theory charged black holes.
9 pages

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General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/134322

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0309108
 http://arxiv.org/abs/gr-qc/0309108

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arXiv