The Collision of Two Black Holes

Details The Collision of Two Black Holes The Collision of Two Black Holes

1993-09-14

arxiv.org/abs/gr-qc/9309016v1

Phys.Rev.Lett. 71 (1993) 2851-2854

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, 93-6

Scientific paper

10.1103/PhysRevLett.71.2851

We study the head-on collision of two equal mass, nonrotating black holes. We consider a range of cases from holes surrounded by a common horizon to holes initially separated by about $20M$, where $M$ is the mass of each hole. We determine the waveforms and energies radiated for both the $\ell = 2$ and $\ell=4$ waves resulting from the collision. In all cases studied the normal modes of the final black hole dominate the spectrum. We also estimate analytically the total gravitational radiation emitted, taking into account the tidal heating of horizons using the membrane paradigm, and other effects. For the first time we are able to compare analytic calculations, black hole perturbation theory, and strong field, nonlinear numerical calculations for this problem, and we find excellent agreement.

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