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arXiv 2604.21990gr-qchep-th
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耗散潮汐的新视角:致密双星旋近中的一阶后牛顿效应

A New Spin on Dissipative Tides: First-Post-Newtonian Effects in Compact Binary Inspirals

University of Illinois Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校);Princeton University(普林斯顿大学)

Anand Balivada, Abhishek Hegade K. R., Nicolás Yunes

AI总结:

本文发展了自旋致密双星中耗散电四极潮汐的次领头阶后牛顿描述,推导了质心运动方程、广义能量平衡定律及准圆轨道的傅里叶相位修正,发现自旋诱导的潮汐耗散在2.5后牛顿阶进入引力波相位并具有对数频率依赖,为高信噪比时代的精确建模提供了新波形要素。

摘要:

自旋致密双星中的潮汐耗散在晚期旋近引力波信号上印刻了特征修正。我们发展了自旋致密双星中耗散电四极潮汐的次领头阶后牛顿描述,推导了质心运动方程、广义能量平衡定律以及轨道角动量与自旋对齐或反平行的准圆轨道对应的傅里叶相位修正。利用与旋转对称性相容的最一般低频线性潮汐响应,我们展示了自旋诱导的潮汐耗散在2.5后牛顿阶进入引力波相位,并具有对数频率依赖,因此不与并合相位简并。对于双黑洞,我们的耗散流在极端质量比极限下重现了视界吸收。这些结果为高信噪比时代自旋致密双星的精确建模提供了新的波形要素。

英文摘要:

Tidal dissipation in spinning compact binaries imprints characteristic corrections on the late-inspiral gravitational-wave signal. We develop a next-to-leading order post-Newtonian description of dissipative, electric-quadrupolar tides in spinning compact binaries, deriving the center-of-mass equations of motion, a generalized energy-balance law, and the corresponding Fourier-phase correction for quasi-circular orbits with spins aligned or anti-aligned with the orbital angular momentum. Using the most general, low-frequency, linear tidal response compatible with rotational symmetry, we show that spin-induced tidal dissipation enters the gravitational-wave phase at 2.5 post-Newtonian order and carries a logarithmic frequency dependence, so it is not degenerate with the coalescence phase. For binary black holes, our dissipative flux reproduces horizon absorption in the extreme-mass-ratio limit. These results provide new waveform ingredients for precision modeling of spinning compact binaries in the high-signal-to-noise era.

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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