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          Institute: MPI für Gravitationsphysik     Collection: Astrophysical Relativity     Display Documents



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ID: 374071.0, MPI für Gravitationsphysik / Astrophysical Relativity
Faithful effective-one-body waveforms of equal-mass coalescing black-hole binaries
Authors:Damour, Thibault; Nagar, Alessandro; Dorband, Ernst Nils; Pollney, Denis; Rezzolla, Luciano
Date of Publication (YYYY-MM-DD):2008-04
Title of Journal:Physical Review D
Volume:77
Issue / Number:8
Sequence Number of Article:084017
Review Status:not specified
Audience:Not Specified
Abstract / Description:We compare a recently derived, resummed high post-Newtonian accuracy effective-one-body (EOB) quadrupolar waveform to the results of a numerical simulation of the inspiral and merger of an equal-mass black-hole binary. We find a remarkable agreement, both in phase and in amplitude, with a maximal dephasing which can be reduced below ±0.005 gravitational-wave cycles over 12 gravitational-wave cycles corresponding to the end of the inspiral, the plunge, the merger, and the beginning of the ring-down. This level of agreement is shown for two different values of the effective fourth post-Newtonian parameter a5, and for corresponding, appropriately flexed values of the radiation-reaction resummation parameter vpole. In addition, our resummed-EOB amplitude agrees to better than the 1% level with the numerical-relativity one up to the late inspiral. These results, together with other recent work on the EOB-numerical-relativity comparison, confirm the ability of the EOB formalism to accurately capture the general-relativistic waveforms.
External Publication Status:published
Document Type:Article
Communicated by:Bernhard F. Schutz
Affiliations:MPI für Gravitationsphysik/Astrophysical Relativity
Identifiers:ISSN:1089-4918
DOI:10.1103/PhysRevD.77.084017
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