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arXiv · 1711.08298

Black hole superradiance and polarization-dependent bending of light

Alexis D. Plascencia·Alfredo Urbano
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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.

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Alexis D. Plascencia, Alfredo Urbano. 2017-11-22. Black hole superradiance and polarization-dependent bending of light. https://doi.org/10.1088/1475-7516%2F2018%2F04%2F059

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