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arXiv 1005.5330gr-qcastro-ph.CO
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旋转紧密二元内螺旋II:守恒角动力学

Spinning compact binary inspiral II: Conservative angular dynamics

László Árpád Gergely

摘要:

我们建立了描述自旋致密双星2 PN严格保守动力学的一组独立变量的演化方程,其中包括了自旋轨道、自旋自旋和质量四极-质量四极效应,对于一般的(非圆的、非球形的)轨道。更具体地说,我们给出了一个封闭的系统的一阶常微分方程的密切椭圆的轨道元素和角度特征的自旋取向相对于密切轨道。我们还证明了:(i)对于质量相等的黑洞,自旋的相对角度保持不变,而与它们的方向无关;(ii)具有相等但反排列自旋的质量相等的黑洞的特殊构型,它们都位于运动平面内(导致数值模拟中发现的最大反冲)保持在2 PN精度水平,具有领先的自旋轨道,自旋自旋和质量四极贡献包括在内。

英文摘要:

We establish the evolution equations of the set of independent variables characterizing the 2PN rigorous conservative dynamics of a spinning compact binary, with the inclusion of the leading order spin-orbit, spin-spin and mass quadrupole - mass monopole effects, for generic (noncircular, nonspherical) orbits. More specifically, we give a closed system of first order ordinary differential equations for the orbital elements of the osculating ellipse and for the angles characterizing the spin orientations with respect to the osculating orbit. We also prove that (i) the relative angle of the spins stays constant for equal mass black holes, irrespective of their orientation, and (ii) the special configuration of equal mass black holes with equal, but antialigned spins, both laying in the plane of motion (leading to the largest recoil found in numerical simulations) is preserved at 2PN level of accuracy, with leading order spin-orbit, spin-spin and mass quadrupolar contributions included.

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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