Multiple shadows from distorted static black holes
General Relativity and Quantum Cosmology
2018-04-25 v1 High Energy Astrophysical Phenomena
Abstract
We study the local shadow of the Schwarzschild black hole with a quadrupole distortion and the influence of the external gravitational field on the photon dynamics. The external matter sources modify the light ring structure and lead to the appearance of multiple shadow images. In the case of negative quadrupole moments we identify the most prominent mechanism causing multiple shadow formation. Furthermore, we obtain a condition under which this mechanism can be realized. This condition depends on the quadrupole moment, but also on the position of the observer and the celestial sphere.
Keywords
Cite
@article{arxiv.1802.03062,
title = {Multiple shadows from distorted static black holes},
author = {Jai Grover and Jutta Kunz and Petya Nedkova and Alexander Wittig and Stoytcho Yazadjiev},
journal= {arXiv preprint arXiv:1802.03062},
year = {2018}
}
Comments
18 pages, 14 figures