Black hole superradiance and polarization-dependent bending of light
General Relativity and Quantum Cosmology
2018-05-16 v2 High Energy Astrophysical Phenomena
High Energy Physics - Phenomenology
Abstract
An inhomogeneous pseudo-scalar field configuration behaves like an optically active medium. Consequently, if a light ray passes through an axion cloud surrounding a Kerr black hole, it may experience a polarization-dependent bending. We explore the size and relevance of such effect considering both the QCD axion and a generic axion-like particle.
Keywords
Cite
@article{arxiv.1711.08298,
title = {Black hole superradiance and polarization-dependent bending of light},
author = {Alexis D. Plascencia and Alfredo Urbano},
journal= {arXiv preprint arXiv:1711.08298},
year = {2018}
}
Comments
Bulk of 29 pages + 11 figures. v2: minor changes, version accepted for publication in JCAP