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arXiv · 1706.07704

Comparison and contrast of test-particle and numerical-relativity waveform templates

J. F. Rodriguez·J. A. Rueda·R. Ruffini
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Abstract

We compare and contrast the emission of gravitational waves and waveforms for the recently established "helicoidal-drifting-sequence" of a test particle around a Kerr black hole with the publicly available waveform templates of numerical-relativity. The merger of two black holes of comparable mass are considered. We outline a final smooth merging of the test particle into the final Kerr black hole. We find a surprising and unexpected agreement between the two treatments if we adopt, for the mass of the particle and the Kerr black hole a Newtonian-center-of-mass description, and for the Kerr black hole spin an effective value whose nature remains to be clarified.

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J. F. Rodriguez, J. A. Rueda, R. Ruffini. 2017-06-23. Comparison and contrast of test-particle and numerical-relativity waveform templates. https://doi.org/10.1088/1475-7516%2F2018%2F02%2F030

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