The strong field gravitational lensing in the Schwarzschild black hole pierced by a cosmic string

Research paper by Jingyun Man, Huawen Wang, Hongbo Cheng

Indexed on: 24 Jun '15Published on: 24 Jun '15Published in: General Relativity and Quantum Cosmology

Abstract

In this work the gravitational lensing in the strong field limit around the Schwarzschild black hole pierced by a cosmic string is studied. We find that the deflection angle and the time delay of the relativistic images depend on the tension of cosmic string. It is interesting that the deflection angle is greater when the tension of cosmic string is stronger. The time delay between two images is more obvious in the case of weaker tension.