paper

A multipolar effective one body waveform model for spin-aligned black hole binaries

arXiv:2001.09082 · doi:10.1103/PhysRevD.102.024077

Abstract

We introduce \TEOBiResumSM{}, an improved version of the effective-one-body (EOB) waveform model \TEOBResumS{} for spin-aligned, coalescing black hole binaries, that includes subdominant gravitational waveform modes completed through merger and ringdown. Beyond the dominant one, the more robust multipoles all over the parameter space are: , , , and . The multipolar ringdown EOB waveform stems from suitably fitting many numerical relativity (NR) waveform data from the Simulating eXtreme Spacetimes (SXS) collaboration together with test-mass waveform data. Mode-mixing effects are not incorporated. The orbital (nonspinning) part of the multipolar waveform amplitudes includes test-mass results up to (relative) 6PN order and, for most modes,is Padé resummed. The =odd waveform multipoles (up to ) incorporate most of the currently available spin-dependent analytical information. Improving on previous work, we confirm that certain modes, e.g. the , and even the , may develop a zero (or a minimum) in the amplitude for nearly equal-mass binaries and for several combinations of the individual spins. A remarkable EOB/NR agreement around such zero is found for these modes. The new waveform, and radiation reaction, prompts a new NR-calibration of the spinning sector of the model, done with only datasets.The maximum EOB/NR unfaithfulness with Advanced LIGO noise against the SXS catalog ( datasets) is always below for binaries with total mass as , except for a single outlier with . When , and modes are included, one finds an excellent EOB/NR agreement up to , above which the performance degrades slightly and moves above

45 pages, 21 figures, several changes with respect to the earlier version. Matches published version

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