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

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

2003-09-23

arxiv.org/abs/gr-qc/0309108v3

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages

Scientific paper

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.

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