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arXiv 1012.4423gr-qc
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三个黑洞的引力波发射特征

Characterization of the gravitational wave emission of three black holes

Pablo Galaviz, Bernd Bruegmann

摘要:

我们研究的引力波发射的三个紧凑的对象使用后牛顿(PN)运动方程来自Arnowitt Deser Misner哈密顿公式,其中我们包括(在这种情况下的第一次)条款高达2.5 PN顺序。我们进行数值模拟的层次结构的三个紧凑的机构,其中一个二进制系统是由第三个,较轻的机构最初远离二进制扰动。不同的PN顺序的相对重要性进行了检查。我们计算波形的线性政权考虑质量四极,电流四极和质量八极的贡献。执行球谐分解的波形,我们发现,从l = 3模式,它是可能的,以提取有关第三个机构的信息,特别是,周期,偏心率的轨道,和倾斜角之间的内部和外部的双轨道。

英文摘要:

We study the gravitational wave emission of three compact objects using post-Newtonian (PN) equations of motion derived from the Arnowitt-Deser-Misner Hamiltonian formulation, where we include (for the first time in this context) terms up to 2.5 PN order. We perform numerical simulations of a hierarchical configuration of three compact bodies in which a binary system is perturbed by a third, lighter body initially far away from the binary. The relative importance of the different PN orders is examined. We compute the waveform in the linear regime considering mass quadrupole, current quadrupole and mass octupole contributions. Performing a spherical harmonic decomposition of the waveforms we find that from the l = 3 modes it is possible to extract information about the third body, in particular, the period, eccentricity of its orbit, and the inclination angle between the inner and outer binary orbits.

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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