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arXiv 1607.07601gr-qc
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四次非线性阶的引力波尾效应

Gravitational-wave tail effects to quartic non-linear order

Tanguy Marchand, Luc Blanchet, Guillaume Faye

摘要:

引力波尾是由于线性波后向散射到物质源的总质量所产生的时空曲率上。占主导地位的尾巴对应于二次非线性相互作用,并出现在一个半后牛顿(1.5PN)秩序的引力波形。“尾的尾”也是已知的,其是在波形中以3PN阶出现的立方非线性效应。我们在这里得到更高的非线性尾部效应,即那些与四次非线性相互作用或“尾巴的尾巴的尾巴”,这是在4.5PN顺序出现。作为应用,我们得到了在圆轨道上运动的致密双星系统的引力波总能流中的完全系数。我们的结果与黑洞微扰计算在两个致密物体的极端质量比的极限下完全一致。

英文摘要:

Gravitational-wave tails are due to the backscattering of linear waves onto the space-time curvature generated by the total mass of the matter source. The dominant tails correspond to quadratic non-linear interactions and arise at the one-and-a-half post-Newtonian (1.5PN) order in the gravitational waveform. The "tails-of-tails", which are cubic non-linear effects appearing at the 3PN order in the waveform, are also known. We derive here higher non-linear tail effects, namely those associated with quartic non-linear interactions or "tails-of-tails-of-tails", which are shown to arise at the 4.5PN order. As an application, we obtain at that order the complete coefficient in the total gravitational-wave energy flux of compact binary systems moving on circular orbits. Our result perfectly agrees with black-hole perturbation calculations in the limit of extreme mass ratio of the two compact objects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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