Strong gravitational lensing across dilaton anti-de Sitter black hole
General Relativity and Quantum Cosmology
2010-04-14 v2
Abstract
In this work we investigate gravitational lensing effect in strong field region around a dilaton black holes in an anti de Sitter (ADS) space. We also analyse the dependence of the radius of the photon sphere and deflection angle on dilaton coupling and cosmological constant in this black hole space time. Finally the values of minimum impact parameter, the separation between the first and the other images as well as the ratio between the flux of the first image and the flux coming from all the other images are determined to characterize some possible distinct signatures of such black holes.
Keywords
Cite
@article{arxiv.1001.5129,
title = {Strong gravitational lensing across dilaton anti-de Sitter black hole},
author = {Tanwi Ghosh and Soumitra Sengupta},
journal= {arXiv preprint arXiv:1001.5129},
year = {2010}
}
Comments
8 pages and 3 figures. Accepted in Physical Review D