Stable Bound Orbits of Massless Particles around a Black Ring
High Energy Physics - Theory
2013-05-08 v1 General Relativity and Quantum Cosmology
Abstract
We study the geodesic motion of massless particles in singly rotating black ring spacetimes. We find stable stationary orbits of massless particles in toroidal spiral shape in the case that the thickness parameter of a black ring is less than a critical value. Furthermore, there exist nonstationary massless particles bounded in a finite region outside the horizon. This is the first example of stable bound orbits of massless particles around a black object.
Keywords
Cite
@article{arxiv.1302.0291,
title = {Stable Bound Orbits of Massless Particles around a Black Ring},
author = {Takahisa Igata and Hideki Ishihara and Yohsuke Takamori},
journal= {arXiv preprint arXiv:1302.0291},
year = {2013}
}
Comments
16 pages, 12 figures