Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2000-07-18
Phys.Rev. D62 (2000) 104024
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
26 Pages, 16 Figures, RevTeX. Submitted to Phys. Rev. D
Scientific paper
10.1103/PhysRevD.62.104024
We present a study of black hole threshold phenomena for a self-gravitating, massive complex scalar field in spherical symmetry. We construct Type I critical solutions dynamically by tuning a one-parameter family of initial data composed of a boson star and a massless real scalar field. The real field is used to perturb the boson star via a gravitational interaction which results in a {\em significant} transfer of energy. The resulting critical solutions, which show great similarity with unstable boson stars, persist for a finite time before dispersing or forming a black hole. We extend the stability analysis of Gleiser and Watkins [Nucl. Phys. B319, 733 (1989)], providing a method for calculating the radial dependence of boson star modes of nonzero frequency. We find good agreement between our critical solutions and boson star modes. For critical solutions less than 90% of the maximum boson star mass $M_{\rm max} \simeq 0.633 M_{Pl}^2/m$, a small halo of matter appears in the tail of the solution. This halo appears to be an artifact of the collision between the original boson star and the real field, and does not belong to the true critical solution. It seems that unstable boson stars are unstable to dispersal in addition to black hole formation. Given the similarity in macroscopic stability between boson and neutron stars, we suggest that neutron stars at or beyond the point of instability may also be unstable to explosion.
Choptuik Matthew W.
Hawley Scott H.
No associations
LandOfFree
Boson stars driven to the brink of black hole formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Boson stars driven to the brink of black hole formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boson stars driven to the brink of black hole formation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-685073