Comparing initial-data sets for binary black holes

Details Comparing initial-data sets for binary black holes Comparing initial-data sets for binary black holes

2002-03-25

arxiv.org/abs/gr-qc/0203085v2

Phys.Rev. D66 (2002) 024047

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages, 12 figures, accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.66.024047

We compare the results of constructing binary black hole initial data with three different decompositions of the constraint equations of general relativity. For each decomposition we compute the initial data using a superposition of two Kerr-Schild black holes to fix the freely specifiable data. We find that these initial-data sets differ significantly, with the ADM energy varying by as much as 5% of the total mass. We find that all initial-data sets currently used for evolutions might contain unphysical gravitational radiation of the order of several percent of the total mass. This is comparable to the amount of gravitational-wave energy observed during the evolved collision. More astrophysically realistic initial data will require more careful choices of the freely specifiable data and boundary conditions for both the metric and extrinsic curvature. However, we find that the choice of extrinsic curvature affects the resulting data sets more strongly than the choice of conformal metric.

Affiliated with

Also associated with

No associations

Rating

Comparing initial-data sets for binary black holes 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 Comparing initial-data sets for binary black holes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparing initial-data sets for binary black holes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-85466