Spherical Boson Stars as Black Hole mimickers
arXiv:1009.1250 · doi:10.1103/PhysRevD.80.084023
Abstract
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.
8 revtex pages, 10 eps figures
References in corpus (11)
- How to tell a gravastar from a black hole
- Thin accretion disks in stationary axisymmetric wormhole spacetimes
- Instability of wormholes supported by a ghost scalar field. I. Linear stability analysis
- Head-on collisions of boson stars
- Gravitational Stability of Boson Stars
- Instability of wormholes supported by a ghost scalar field. II. Nonlinear evolution
- Orbital Dynamics of Binary Boson Star Systems
- On the ergoregion instability in rotating gravastars
- Thin accretion disks onto brane world black holes
- Accretion disk onto boson stars: a way to supplant black holes candidates
- Black hole mimickers: regular versus singular behavior