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Faithful effective-one-body waveforms of equal-mass coalescing black-hole binaries

MPG-Autoren

Dorband,  Ernst Nils
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

Pollney,  Denis
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

Rezzolla,  Luciano
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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PhyRevD77-084017.pdf
(Verlagsversion), 508KB

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Zitation

Damour, T., Nagar, A., Dorband, E. N., Pollney, D., & Rezzolla, L. (2008). Faithful effective-one-body waveforms of equal-mass coalescing black-hole binaries. Physical Review D, 77(8): 084017. doi:10.1103/PhysRevD.77.084017.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0013-62E2-3
Zusammenfassung
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.