Dynamical shift condition for unequal mass black hole binaries
General Relativity and Quantum Cosmology
2015-03-13 v1
Abstract
Certain numerical frameworks used for the evolution of binary black holes make use of a gamma driver, which includes a damping factor. Such simulations typically use a constant value for damping. However, it has been found that very specific values of the damping factor are needed for the calculation of unequal mass binaries. We examine carefully the role this damping plays, and provide two explicit, non-constant forms for the damping to be used with mass-ratios further from one. Our analysis of the resultant waveforms compares well against the constant damping case.
Cite
@article{arxiv.1003.4681,
title = {Dynamical shift condition for unequal mass black hole binaries},
author = {Doreen Mueller and Jason Grigsby and Bernd Bruegmann},
journal= {arXiv preprint arXiv:1003.4681},
year = {2015}
}
Comments
10 pages, 14 figures