Retrograde Polish Doughnuts around Boson Stars
Abstract
We investigate Polish doughnuts with a uniform constant specific angular momentum distribution in the space-times of rotating boson stars. In such space-times thick tori can exhibit unique features not present in Kerr space-times. For instance, in the context of retrograde tori, they may possess two centers connected or not by a cusp. Rotating boson stars also feature a static ring, neither present in Kerr space-times. This static ring consists of static orbits, where particles are at rest with respect to a zero angular momentum observer at infinity. Here we show that the presence of a static ring allows for an associated static surface of a retrograde thick torus, where inside the static surface the fluid moves in prograde direction. We classify the retrograde Polish doughnuts and present several specific examples.
Keywords
Cite
@article{arxiv.2011.10288,
title = {Retrograde Polish Doughnuts around Boson Stars},
author = {Matheus C. Teodoro and Lucas G. Collodel and Jutta Kunz},
journal= {arXiv preprint arXiv:2011.10288},
year = {2021}
}