Rotating Boson Stars and Q-Balls II: Negative Parity and Ergoregions

Details Rotating Boson Stars and Q-Balls II: Negative Parity and Ergoregions Rotating Boson Stars and Q-Balls II: Negative Parity and Ergoregions

2007-12-21

arxiv.org/abs/0712.3742v1

Phys.Rev.D77:064025,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, 17 figures

Scientific paper

10.1103/PhysRevD.77.064025

We construct axially symmetric, rotating boson stars with positive and negative parity. Their flat space limits represent spinning Q-balls. $Q$-balls and boson stars exist only in a limited frequency range. The coupling to gravity gives rise to a spiral-like frequency dependence of the mass and charge of boson stars. We analyze the properties of these solutions. In particular, we discuss the presence of ergoregions in boson stars, and determine their domains of existence.

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