Hairy Black Holes and Null Circular Geodesics
General Relativity and Quantum Cosmology
2015-06-03 v1 High Energy Astrophysical Phenomena
High Energy Physics - Theory
Abstract
Einstein-matter theories in which hairy black-hole configurations have been found are studied. We prove that the nontrivial behavior of the hair must extend beyond the null circular orbit (the photonsphere) of the corresponding spacetime. We further conjecture that the region above the photonsphere contains at least 50% of the total hair's mass. We support this conjecture with analytical and numerical results.
Cite
@article{arxiv.1112.3286,
title = {Hairy Black Holes and Null Circular Geodesics},
author = {Shahar Hod},
journal= {arXiv preprint arXiv:1112.3286},
year = {2015}
}
Comments
5 pages