Gravitational lensing by a charged black hole of string theory

By A. Bhadra. 2003

157 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/543d59998e34ba125c06ae5f8b5ed50f7f4654a0

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In Astronomy and Astrophysics

1. Rahul Kumar
2. Sushant G. Ghosh
3. Shafqat Ul Islam

In Nuclear and High Energy Physics

1. Rahul Kumar
2. Sushant G. Ghosh
3. Shafqat Ul Islam

Citations in the corpus

• Gravitational lensing by black holes in the 4D Einstein-Gauss-Bonnet gravity (2020, methodology): “This technique has been applied to static, spherically symmetric metrics which includes Reissner−Nordstrom black holes [50], braneworld black holes [51–54], charged black hole of heterotic string theory [55], and was also generalized to an arbitrary static, spherically symmetric metric by Bozza [56]”