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arXiv 2008.11770gr-qc
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Kerr黑洞的二阶微扰:度规的重建

Second Order Perturbations of Kerr Black Holes: Reconstruction of the Metric

Nicholas Loutrel, Justin L. Ripley, Elena Giorgi, Frans Pretorius

摘要:

受双黑洞合并的引力波观测的启发,我们提出了一个计算Kerr黑洞周围首阶非线性引力波相互作用的方法.我们描述的形式主义用于推导方程的二阶扰动。我们开发了一个程序,使我们能够重建的一阶度量扰动的知识,仅从一阶Teukolsky方程的解决方案,而不需要赫兹的潜力。最后,我们说明了这种度量重建过程中的渐近极限的一阶拟正常模式的克尔。在配套文件中,我们提出了这些想法的数值实现。

英文摘要:

Motivated by gravitational wave observations of binary black hole mergers, we present a procedure to compute the leading order nonlinear gravitational wave interactions around a Kerr black hole. We describe the formalism used to derive the equations for second order perturbations. We develop a procedure that allows us to reconstruct the first order metric perturbation solely from knowledge of the solution to the first order Teukolsky equation, without the need of Hertz potentials. Finally, we illustrate this metric reconstruction procedure in the asymptotic limit for the first order quasi-normal modes of Kerr. In a companion paper, we present a numerical implementation of these ideas.

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