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

被引:102
|
作者
Damour, Thibault [1 ,2 ]
Nagar, Alessandro [1 ,2 ,3 ]
Dorband, Ernst Nils [4 ]
Pollney, Denis [4 ]
Rezzolla, Luciano [4 ,5 ]
机构
[1] Inst Hautes Etud Sci, F-91440 Bures Sur Yvette, France
[2] ICRANet, I-65122 Pescara, Italy
[3] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
[4] Max Planck Inst Gravitat Phys, Potsdam, Germany
[5] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
来源
PHYSICAL REVIEW D | 2008年 / 77卷 / 08期
关键词
D O I
10.1103/PhysRevD.77.084017
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 a(5), and for corresponding, appropriately flexed values of the radiation-reaction resummation parameter v(pole). 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.
引用
收藏
页数:14
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