Evolution of a mass-less test scalar field on Boson Stars space-times
arXiv:1007.1162 · doi:10.1103/PhysRevD.82.023005
Abstract
We numerically solve the mass-less test scalar field equation on the space-time background of boson stars and black holes. In order to do so, we use a numerical domain that contains future null infinity. We achieve this construction using a scri-fixing conformal compactification technique based on hyperboloidal constant mean curvature foliations of the space-time and solve the conformally invariant wave equation. We present two results: the scalar field shows oscillations of the quasi- normal-mode type found for black holes only for boson star configurations that are compact, and no signs of tail decay is found in the parameter space we explored. Even though our results do not correspond to the master equation of perturbations of boson star solutions, they indicate that the parameter space of boson stars as black hole mimickers is restricted to compact configurations.
9 pages, 15 eps figures, revtex4
References in corpus (18)
- 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
- Ergoregion instability of ultra-compact astrophysical objects
- Head-on collisions of boson stars
- Hyperboloidal foliations and scri-fixing
- Can accretion disk properties distinguish gravastars from black holes?
- 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
- Spherical Boson Stars as Black Hole mimickers
- Regularity of the Einstein Equations at Future Null Infinity
- Spacelike matching to null infinity
- Gravitational perturbations of Schwarzschild spacetime at null infinity and the hyperboloidal initial value problem
- A hyperboloidal study of tail decay rates for scalar and Yang-Mills fields