Binary black hole merger dynamics and waveforms

Details Binary black hole merger dynamics and waveforms Binary black hole merger dynamics and waveforms

2006-02-07

arxiv.org/abs/gr-qc/0602026v2

Phys.Rev.D73:104002,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, 11 figures, submitted to PRD, update citations, minor changes

Scientific paper

10.1103/PhysRevD.73.104002

We study dynamics and radiation generation in the last few orbits and merger of a binary black hole system, applying recently developed techniques for simulations of moving black holes. Our analysis of the gravitational radiation waveforms and dynamical black hole trajectories produces a consistent picture for a set of simulations with black holes beginning on circular-orbit trajectories at a variety of initial separations. We find profound agreement at the level of one percent among the simulations for the last orbit, merger and ringdown. We are confident that this part of our waveform result accurately represents the predictions from Einstein's General Relativity for the final burst of gravitational radiation resulting from the merger of an astrophysical system of equal-mass non-spinning black holes. The simulations result in a final black hole with spin parameter a/m=0.69. We also find good agreement at a level of roughly 10 percent for the radiation generated in the preceding few orbits.

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