Spherical Boson Stars as Black Hole mimickers

Details Spherical Boson Stars as Black Hole mimickers Spherical Boson Stars as Black Hole mimickers

2010-09-07

arxiv.org/abs/1009.1250v1

Phys.Rev.D80:084023,2009

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

8 revtex pages, 10 eps figures

Scientific paper

10.1103/PhysRevD.80.084023

We present spherically symmetric boson stars as black hole mimickers based on the power spectrum of a simple accretion disk model. The free parameters of the boson star are the mass of the boson and the fourth order self-interaction coefficient in the scalar field potential. We show that even if the mass of the boson is the only free parameter it is possible to find a configuration that mimics the power spectrum of the disk due to a black hole of the same mass. We also show that for each value of the self-interaction a single boson star configuration can mimic a black hole at very different astrophysical scales in terms of the mass of the object and the accretion rate. In order to show that it is possible to distinguish one of our mimickers from a black hole we also study the deflection of light.

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