Spinning compact binary inspiral: Independent variables and dynamically preserved spin configurations
Spinning compact binary inspiral: Independent variables and dynamically preserved spin configurations
复制标题
旋转紧凑二元螺旋：自变量和动态保留的旋转配置
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
L. Gergely
中科院分区：
文献类型：
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作者：
L. Gergely
我们建立了一组适合于监测自旋致密双星在吸气过程中复杂演化的自变量。我们的方法是有效的，直到第二个后牛顿阶，包括领先阶自旋-轨道，自旋-自旋和质量四极-质量单极子效应，一般（非圆形，非球形）轨道。然后，我们根据这些变量分析了保守自旋动力学。我们证明了唯一的双黑洞构型，允许自旋进动具有相等的角速度，围绕一个共同的瞬时轴大致与密切轨道的法线对齐，是等质量和平行（对准或反对准）自旋构型。这一分析结果限制了在紧致双星演化的数值研究中所能选择的特定构型，甚至在那些只包括灵感最后轨道的情况下也是如此。
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 quadrupole-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 instantaneous 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.
影响因子：
5
作者：
T. Damour;P. Jaranowski;G. Schāfer
通讯作者：
T. Damour;P. Jaranowski;G. Schāfer