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arXiv 0912.0459gr-qcastro-ph.CO
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自旋紧密双星内旋:独立变量和动态保持的自旋构型

Spinning compact binary inspiral: Independent variables and dynamically preserved spin configurations

László Árpád Gergely

摘要:

我们建立了一套独立的变量适合监控的自旋致密双星的复杂演变过程中的inspiral。我们的方法是有效的第二个后牛顿秩序,包括领先的顺序自旋轨道,自旋自旋和质量四极质量的影响,为通用(非圆形,非球形)的轨道。然后我们分析了这些变量的保守自旋动力学。我们证明,唯一的二元黑洞配置允许自旋进动具有相等的角速度约一个共同的intanganeous轴大致对齐的密切轨道的法线,是等质量和平行(对齐或反对齐)的自旋配置。这一分析结果提出了限制什么样的特定配置可以选择在数值研究的紧凑型二进制的演变,即使在那些只包括最后的轨道的inspiral。

英文摘要:

We establish the set of independent variables suitable to monitor the complicated evolution of the spinning compact binary during the inspiral. Our approach is valid up to the second post-Newtonian order, including leading order spin-orbit, spin-spin and mass quadrupol-mass monopole effects, for generic (noncircular, nonspherical) orbits. Then we analyze the conservative spin dynamics in terms of these variables. We prove that the only binary black hole configuration allowing for spin precessions with equal angular velocities about a common intantaneous axis roughly aligned to the normal of the osculating orbit, is the equal mass and parallel (aligned or antialigned) spin configuration. This analytic result puts limitations on what particular configurations can be selected in numerical investigations of compact binary evolutions, even in those including only the last orbits of the inspiral.

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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