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Algebraic Classification of Numerical Spacetimes and Black-Hole-Binary Remnants

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arxiv 0811.3006 v2 pith:T4UHYR6Y submitted 2008-11-18 gr-qc astro-ph

Algebraic Classification of Numerical Spacetimes and Black-Hole-Binary Remnants

classification gr-qc astro-ph
keywords algebraicapproachesblack-hole-binaryclassificationgenericmergernumericalspacetime
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In this paper we develop a technique for determining the algebraic classification of a numerical spacetime, possibly resulting from a generic black-hole-binary merger, using the Newman-Penrose Weyl scalars. We demonstrate these techniques for a test case involving a close binary with arbitrarily oriented spins and unequal masses. We find that, post merger, the spacetime quickly approaches Petrov type II, and only approaches type D on much longer timescales. These techniques allow us to begin to explore the validity of the "no-hair theorem" for generic merging-black-hole spacetimes.

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Cited by 2 Pith papers

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    gr-qc 2020-10 accept novelty 5.0

    No evidence for deviations from general relativity is found in LIGO-Virgo binary black hole events, with improved constraints on waveform parameters, graviton mass, and ringdown properties.