Black-hole binary simulations: the mass ratio 10:1

Details Black-hole binary simulations: the mass ratio 10:1 Black-hole binary simulations: the mass ratio 10:1

2008-11-24

arxiv.org/abs/0811.3952v2

Phys.Rev.D79:124006,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

To match published version

Scientific paper

10.1103/PhysRevD.79.124006

We present the first numerical simulations of an initially non-spinning black-hole binary with mass ratio as large as 10:1 in full general relativity. The binary completes approximately 3 orbits prior to merger and radiates about 0.415% of the total energy and 12.48% of the initial angular momentum in the form of gravitational waves. The single black hole resulting from the merger acquires a kick of about 66.7 km/s relative to the original center of mass frame. The resulting gravitational waveforms are used to validate existing formulas for the recoil, final spin and radiated energy over a wider range of the symmetric mass ratio parameter eta=M1*M2/(M1+M2)^2 than previously possible. The contributions of l > 2 multipoles are found to visibly influence the gravitational wave signal obtained at fixed inclination angles.

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