前几个泛音探测事件穹界的几何形状

IF 10.2 4区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
R.A. Konoplya , A. Zhidenko
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引用次数: 0

摘要

人们普遍认为,准正常模式无法说明黑洞近地平线的几何形状,因为低洼模式通常是由有效势峰值附近的扰动散射决定的。我们将利用黑洞时空的一般参数化,尊重一般后牛顿渐近论,证明在事件视界附近相对较小的区域内,对施瓦兹柴尔德/克尔几何的微小修改会导致几乎相同的施瓦兹柴尔德/克尔基本模式,但完全不同的前几个泛音。考虑到前几个泛音会影响早期和中期的准正常振铃(Giesler 等人,2019 年),我们认为原则上可以通过准正常频谱的前几个泛音来研究近地平线几何,这一点非常重要,因为对爱因斯坦理论的修正必须精确地修改近地平线几何,同时保持已知的弱场机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
First few overtones probe the event horizon geometry
It is broadly believed that quasinormal modes cannot tell the black-hole near-horizon geometry, because usually the low-lying modes are determined by the scattering of perturbations around the peak of the effective potential. Using the general parametrization of the black-hole spacetimes respecting the generic post-Newtonian asymptotic, we will show that tiny modifications of the Schwarzschild/Kerr geometry in a relatively small region near the event horizon lead to almost the same Schwarzschild/Kerr fundamental mode, but totally different first few overtones. Having in mind that the first several overtones affect the quasinormal ringing at its early and intermediate stage (Giesler et al., 2019), we argue that the near-horizon geometry could in principle be studied via the first few overtones of the quasinormal spectrum, which is important because corrections to the Einstein theory must modify precisely the near-horizon geometry, keeping the known weak field regime.
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来源期刊
Journal of High Energy Astrophysics
Journal of High Energy Astrophysics Earth and Planetary Sciences-Space and Planetary Science
CiteScore
9.70
自引率
5.30%
发文量
38
审稿时长
65 days
期刊介绍: The journal welcomes manuscripts on theoretical models, simulations, and observations of highly energetic astrophysical objects both in our Galaxy and beyond. Among those, black holes at all scales, neutron stars, pulsars and their nebula, binaries, novae and supernovae, their remnants, active galaxies, and clusters are just a few examples. The journal will consider research across the whole electromagnetic spectrum, as well as research using various messengers, such as gravitational waves or neutrinos. Effects of high-energy phenomena on cosmology and star-formation, results from dedicated surveys expanding the knowledge of extreme environments, and astrophysical implications of dark matter are also welcomed topics.
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