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  Enriching the Symphony of Gravitational Waves from Binary Black Holes by Tuning Higher Harmonics

Cotesta, R., Buonanno, A., Bohé, A., Taracchini, A., Hinder, I., & Ossokine, S. (2018). Enriching the Symphony of Gravitational Waves from Binary Black Holes by Tuning Higher Harmonics. Physical Review D, 98(8): 084028. doi:10.1103/PhysRevD.98.084028.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-4095-E Version Permalink: http://hdl.handle.net/21.11116/0000-0002-E986-0
Genre: Journal Article

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 Creators:
Cotesta , Roberto, Author
Buonanno, Alessandra1, Author              
Bohé, Alejandro1, Author              
Taracchini, Andrea1, Author              
Hinder, Ian1, Author              
Ossokine, Serguei1, Author              
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1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: For the first time, we construct an inspiral-merger-ringdown waveform model within the effective-one-body formalism for spinning, nonprecessing binary black holes that includes gravitational modes beyond the dominant $(\ell,|m|) = (2,2)$ mode, specifically $(\ell,|m|)=(2,1),(3,3),(4,4),(5,5)$. Our multipolar waveform model incorporates recent (resummed) post-Newtonian results for the inspiral and information from 157 numerical-relativity simulations, and 13 waveforms from black-hole perturbation theory for the (plunge-)merger and ringdown. We quantify the improved accuracy including higher-order modes by computing the faithfulness of the waveform model against the numerical-relativity waveforms used to construct the model. We define the faithfulness as the match maximized over time, phase of arrival, gravitational-wave polarization and sky position of the waveform model, and averaged over binary orientation, gravitational-wave polarization and sky position of the numerical-relativity waveform. When the waveform model contains only the $(2,2)$ mode, we find that the averaged faithfulness to numerical-relativity waveforms containing all modes with $\ell \leq$ 5 ranges from $90\%$ to $99.9\%$ for binaries with total mass $20-200 M_\odot$ (using the Advanced LIGO's design noise curve). By contrast, when the $(2,1),(3,3),(4,4),(5,5)$ modes are also included in the model, the faithfulness improves to $99\%$ for all but four configurations in the numerical-relativity catalog, for which the faithfulness is greater than $98.5\%$. Using our results, we also develop also a (stand-alone) waveform model for the merger-ringdown signal, calibrated to numerical-relativity waveforms, which can be used to measure multiple quasi-normal modes. The multipolar waveform model can be extended to include spin-precession, and will be employed in upcoming observing runs of Advanced LIGO and Virgo.

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 Dates: 2018-03-282018
 Publication Status: Published in print
 Pages: 28 pages
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 Identifiers: arXiv: 1803.10701
URI: http://arxiv.org/abs/1803.10701
DOI: 10.1103/PhysRevD.98.084028
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 98 (8) Sequence Number: 084028 Start / End Page: - Identifier: -