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arXiv · 2011.10288

Retrograde Polish Doughnuts around Boson Stars

Matheus C. Teodoro·Lucas G. Collodel·Jutta Kunz
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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.

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Matheus C. Teodoro, Lucas G. Collodel, Jutta Kunz. 2020-11-20. Retrograde Polish Doughnuts around Boson Stars. https://doi.org/10.1088/1475-7516/2021/03/063

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