Matching post-Newtonian and numerical relativity waveforms: Systematic errors and a new phenomenological model for nonprecessing black hole binaries

Santamarıa, L., Ohme, Frank, Ajith, P., Brugmann, B., Dorband, N., Hannam, Mark ORCID: https://orcid.org/0000-0001-5571-325X, Husa, S., Mosta, P., Pollney, D., Reisswig, C., Robinson, E. L., Seiler, J. and Krishnan, B. 2010. Matching post-Newtonian and numerical relativity waveforms: Systematic errors and a new phenomenological model for nonprecessing black hole binaries. Physical Review D 82 (6) , 064016. 10.1103/PhysRevD.82.064016

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Abstract

We present a new phenomenological gravitational waveform model for the inspiral and coalescence of nonprecessing spinning black hole binaries. Our approach is based on a frequency-domain matching of post-Newtonian inspiral waveforms with numerical relativity based binary black hole coalescence waveforms. We quantify the various possible sources of systematic errors that arise in matching post- Newtonian and numerical relativity waveforms, and we use a matching criteria based on minimizing these errors; we find that the dominant source of errors are those in the post-Newtonian waveforms near the merger. An analytical formula for the dominant mode of the gravitational radiation of nonprecessing black hole binaries is presented that captures the phenomenology of the hybrid waveforms. Its implementation in the current searches for gravitational waves should allow cross-checks of other inspiral-mergerringdown waveform families and improve the reach of gravitational-wave searches.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	American Physical Society
ISSN:	0556-2821
Last Modified:	24 Oct 2022 12:03
URI:	https://orca.cardiff.ac.uk/id/eprint/50329

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