Retarded radiation from colliding black holes in the close limit

Details Retarded radiation from colliding black holes in the close limit Retarded radiation from colliding black holes in the close limit

2001-08-29

arxiv.org/abs/gr-qc/0108075v1

Phys.Rev. D65 (2002) 084034

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, 13 figures, revtex4

Scientific paper

10.1103/PhysRevD.65.084034

We use null hypersurface techniques in a new approach to calculate the retarded waveform from a binary black hole merger in the close approximation. The process of removing ingoing radiation from the system leads to two notable features in the shape of the close approximation waveform for a head-on collision of black holes: (i) an initial quasinormal ringup and (ii) weak sensitivity to the parameter controlling the collision velocity. Feature (ii) is unexpected and has the potential importance of enabling the design of an efficient template for extracting the gravitational wave signal from the noise.

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