Accurate effective-one-body waveforms of inspiralling and coalescing black-hole binaries

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dc.contributor.authorDamour, Thibault
dc.contributor.authorNagar, Alessandro
dc.contributor.authorHannam, Mark
dc.contributor.authorHusa, Sascha
dc.contributor.authorBruegmann, Bernd
dc.date.accessioned2017-08-29T09:14:24Z
dc.date.available2017-08-29T09:14:24Z
dc.date.issued2008
dc.description.abstractThe effective-one-body (EOB) formalism contains several flexibility parameters, notably a(5), upsilon(pole) and (a) over bar (RR). We show here how to jointly constrain the values of these parameters by simultaneously best-fitting the EOB waveform to two, independent, numerical relativity (NR) simulations of inspiralling and/or coalescing binary black-hole systems: published Caltech-Cornell inspiral data (considered for gravitational wave frequencies Mw <= 0.1) on one side, and newly computed coalescence data on the other side. The resulting, approximately unique, "best-fit" EOB waveform is then shown to exhibit excellent agreement with NR coalescence data for several mass ratios. The dephasing between this best-fit EOB waveform and published Caltech-Cornell inspiral data is found to vary between -0.0014 and +0.0008 radians over a time span of similar to 2464M up to gravitational wave frequency Mw = 0.1, and between +0.0013 and -0.0185 over a time span of 96M after Mw = 0.1 up to Mw = 0. 1565. The dephasings between EOB and the new coalescence data are found to be smaller than: (i) +/- 0.025 radians over a time span of 730M (11 cycles) up to merger, in the equal-mass case,and (ii) +/- 0.05 radians over a time span of about 950M ( 17 cycles) up to merger in the 2:1 mass-ratio case. These new results corroborate the aptitude of the EOB formalism to provide accurate representations of general relativistic waveforms, which are needed by Currently operating gravitational wave detectors.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid44039
dc.identifier.citationDamour, T., Nagar, A., Hannam, M., Husa, S. and Brügmann, B. (2008) 'Accurate effective-one-body waveforms of inspiralling and coalescing black-hole binaries', Physical Review D, 78(4), 044039 (24pp). doi: 10.1103/PhysRevD.78.044039en
dc.identifier.doi10.1103/PhysRevD.78.044039
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.issued4
dc.identifier.journaltitlePhysical Review Den
dc.identifier.urihttps://hdl.handle.net/10468/4573
dc.identifier.volume78
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.78.044039
dc.rights© 2008, American Physical Societyen
dc.subjectGravitational-radiationen
dc.subjectInitial dataen
dc.subjectCompact binariesen
dc.subjectCircular orbiten
dc.subjectPArticle (peer-reviewed)en
dc.subjectTransformationsen
dc.subjectPerturbationsen
dc.subjectSpacetimesen
dc.subjectFormalismen
dc.titleAccurate effective-one-body waveforms of inspiralling and coalescing black-hole binariesen
dc.typeArticle (peer-reviewed)en
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