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arXiv 2103.01249gr-qcastro-ph.GAhep-th
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修正引力理论中黑洞准正规模的启示

Lessons from black hole quasinormal modes in modified gravity

Che-Yu Chen, Mariam Bouhmadi-López, Pisin Chen

摘要:

受扰黑洞的准正态模与双黑洞并合过程中的引力波信号密切相关,因而近年来引起了人们的广泛兴趣。这些模式的一个有趣的特点是,它们尊重无毛定理,因此,它们可以用来测试黑洞时空和基本的引力理论。在本文中,我们展示了如何在爱因斯坦广义相对论之外的理论中改变黑洞的准正规模的三个不同方面。这些方面是:准正规模谱与广义相对论中的谱相比发生了直接的改变,高频准正规模与黑洞周围光子测地线之间的几何对应关系被破坏,轴向引力扰动与极向引力扰动之间的等谱性被打破。将在每一个案中提供若干例子。还将讨论与未来观测相关的前景和可能的挑战。

英文摘要:

Quasinormal modes of perturbed black holes have recently gained much interest because of their tight relations with the gravitational wave signals emitted during the post-merger phase of a binary black hole coalescence. One of the intriguing features of these modes is that they respect the no-hair theorem, and hence, they can be used to test black hole space-times and the underlying gravitational theory. In this paper, we exhibit three different aspects of how black hole quasinormal modes could be altered in theories beyond Einstein general relativity. These aspects are the direct alterations of quasinormal modes spectra as compared with those in general relativity, the violation of the geometric correspondence between the high-frequency quasinormal modes and the photon geodesics around the black hole, and the breaking of the isospectrality between the axial and polar gravitational perturbations. Several examples will be provided in each individual case. The prospects and possible challenges associated with future observations will be also discussed.

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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