On characteristic initial data for a star orbiting a black hole

Details On characteristic initial data for a star orbiting a black hole On characteristic initial data for a star orbiting a black hole

2004-12-16

arxiv.org/abs/gr-qc/0412080v1

Phys.Rev. D72 (2005) 024002

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, 10 figures

Scientific paper

10.1103/PhysRevD.72.024002

We take further steps in the development of the characteristic approach to enable handling the physical problem of a compact self-gravitating object, such as a neutron star, in close orbit around a black hole. We examine different options for setting the initial data for this problem and, in order to shed light on their physical relevance, we carry out short time evolution of this data. To this end we express the matter part of the characteristic gravity code so that the hydrodynamics are in conservation form. The resulting gravity plus matter relativity code provides a starting point for more refined future efforts at longer term evolution. In the present work we find that, independently of the details of the initial gravitational data, the system quickly flushes out spurious gravitational radiation and relaxes to a quasi-equilibrium state with an approximate helical symmetry corresponding to the circular orbit of the star.

Affiliated with

Also associated with

No associations

Rating

On characteristic initial data for a star orbiting a black hole 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 On characteristic initial data for a star orbiting a black hole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On characteristic initial data for a star orbiting a black hole will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-628546