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arXiv 1002.2227gr-qc
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Kerr背景下引力微扰的一维描述

One dimensional description of the gravitational perturbation in a Kerr background

Darío Núñez, Juan Carlos Degollado, Carlos Palenzuela

摘要:

在克尔背景下的微扰方程被写为一个耦合系统的一维方程的不同模式在时域。数值模拟表明,在引力响应的主导模式是一个对应的模式的初始扰动,使我们能够推测,模式之间的耦合有一个弱的影响,在我们的方程组。我们的结论是,在忽略耦合项的情况下,可以得到一个一维的调和方程,它确实能很好地描述低自旋Kerr黑洞的引力响应,而对于高自旋的Kerr黑洞,只需要很少的耦合就可以描述。这一结果有助于理解克尔背景下的测试场结构,甚至可以有效地生成各种情况下的准确波形。

英文摘要:

The perturbation equation in a Kerr background is written as a coupled system of one dimensional equations for the different modes in the time domain. Numerical simulations show that the dominant mode in the gravitational response is the one corresponding to the mode of the initial perturbation, allowing us to conjecture that the coupling among the modes has a weak influence in our system of equations. We conclude that by neglecting the coupling terms it can be obtained a one dimensional harmonic equation which indeed describes with good accuracy the gravitational response from the Kerr black hole with low spin, while only few couplings are necessary to describe a high spin one. This result may help to understand the structure of test fields in a Kerr background and even to generate accurate waveforms for various cases in an efficient manner.

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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