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arXiv 2203.14969gr-qc
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量子形变Kerr黑洞的赤道和极准正规模及准周期振荡

Equatorial and polar quasinormal modes and quasiperiodic oscillations of quantum deformed Kerr black hole

Kimet Jusufi, Mustapha Azreg-Aïnou, Mubasher Jamil, Qiang Wu

摘要:

在本文中,我们专注于准正规模(QNM)和旋转黑洞阴影之间的关系。作为一个具体的例子,我们考虑了用Newman-Janis-Azreg-A "ınou算法得到的量子形变Kerr黑洞.特别是,使用的几何光学对应关系的QNM的参数和守恒量沿测地线,我们表明,在程函限制,QNM的实部是相关的开普勒频率赤道轨道。为此,我们探索了视角的典型阴影半径$θ_0=π/2$,并在视角$θ_0=0$(或等效地$θ_0=π$)的情况下获得了一个有趣的关系。此外,我们还计算了相应的赤道模和极模以及量子形变Kerr黑洞的量子稳定性。我们还研究了其他天体物理应用,如准周期振荡和S2星的运动来约束量子形变参数。

英文摘要:

In this paper we focus on the relation between quasinormal modes (QNMs) and a rotating black hole shadows. As a specific example, we consider the quantum deformed Kerr black hole obtained via Newman--Janis--Azreg-A\"ınou algorithm. In particular, using the geometric-optics correspondence between the parameters of a QNMs and the conserved quantities along geodesics, we show that, in the eikonal limit, the real part of QNMs is related to the Keplerian frequency for equatorial orbits. To this end, we explore the typical shadow radius for the viewing angles, $θ_0=π/2$, and obtained an interesting relation in the case of viewing angle $θ_0=0$ (or equivalently $θ_0=π$). Furthermore we have computed the corresponding equatorial and polar modes and the thermodynamical stability of the quantum deformed Kerr black hole. We also investigate other astrophysical applications such as the quasiperiodic oscillations and the motion of S2 star to constrain the quantum deforming parameter.

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