Retarded radiation from colliding black holes in the close limit

Abstract

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.

14 pages, 13 figures, revtex4

References in corpus (5)

• The 3D Grazing Collision of Two Black Holes
• Gravitational waveforms with controlled accuracy
• Gravitational Waves from a Fissioning White Hole
• The close limit from a null point of view: the advanced solution
• Close limit evolution of Kerr-Schild type initial data for binary black holes

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