被暗物质包围的旋转黑洞的超光度

IF 5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics of the Dark Universe Pub Date : 2024-08-23 DOI:10.1016/j.dark.2024.101624

Quan-Xu Liu , Ya-Peng Hu , Tao-Tao Sui , Yu-Sen An

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引用次数: 0

摘要

在被暗物质包围的旋转黑洞背景中，我们研究了大质量标量场的超辐射现象及其相关的不稳定性。利用渐近匹配方法，我们计算了标量波散射的放大系数，以评估超辐射的强度。我们讨论了暗物质密度对黑洞背景中放大系数的影响。结果表明，暗物质的存在对黑洞超辐射有抑制作用。我们还计算了净提取能量，以进一步支持这一结果。最后，我们利用黑洞炸弹机制分析了大质量标量场引起的超辐射不稳定性，发现暗物质的存在对超辐射不稳定性条件没有影响。

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Superradiance of rotating black holes surrounded by dark matter

In rotating black hole background surrounded by dark matter, we investigated the super-radiant phenomenon of massive scalar field and its associated instability. Using the method of asymptotic matching, we computed the amplification factor of scalar wave scattering to assess the strength of super-radiance. We discussed the influence of dark matter density on amplification factor in this black hole background. Our result indicates that the presence of dark matter has suppressive influence on black hole super-radiance. We also computed the net extracted energy to further support this result. Finally, we analyzed the super-radiant instability caused by massive scalar field using the black hole bomb mechanism and found that the presence of dark matter has no influence on the super-radiant instability condition.

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来源期刊

Physics of the Dark Universe ASTRONOMY & ASTROPHYSICS-

CiteScore

9.60

自引率

7.30%

发文量

118

审稿时长

61 days

期刊介绍： Physics of the Dark Universe is an innovative online-only journal that offers rapid publication of peer-reviewed, original research articles considered of high scientific impact. The journal is focused on the understanding of Dark Matter, Dark Energy, Early Universe, gravitational waves and neutrinos, covering all theoretical, experimental and phenomenological aspects.