小型原始黑洞周围的热化和热点形成

IF 5.3 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Minxi He, Kazunori Kohri, Kyohei Mukaida and Masaki Yamada
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引用次数: 0

摘要

我们定量分析了一个基本问题:黑洞(BH)周围背景等离子体温度曲线的静态解是什么?人们可能会天真地认为,温度曲线会从黑洞表面的霍金温度向外围区域持续降低。我们用分析和数值方法证明,情况并非如此,因为在黑洞表面附近无法保持局部热平衡,而且霍金辐射发射的高能粒子也无法瞬间热化到背景等离子体中。在距离BH有限的距离内,温度曲线会出现一个高原,甚至在距离BH很远的地方,背景温度的总体振幅与天真的预期相比也会受到明显的抑制。出现这些反直觉结果的主要原因是,BH 的尺寸太小,以至于霍金辐射粒子在典型的相互作用时间尺度内无法到达远处。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Thermalization and hotspot formation around small primordial black holes
We quantitatively analyze a basic question: what is the stationary solution of the background plasma temperature profile around a black hole (BH)? One may naively expect that the temperature profile continuously decreases from the Hawking temperature at the surface of the BH towards an outer region. We show analytically and numerically that this is not the case because local thermal equilibrium cannot be maintained near the surface of the BH and also because the high-energy particles emitted from Hawking radiation cannot be instantaneously thermalized into the background plasma. The temperature profile has a plateau within a finite distance from the BH, and even the overall amplitude of background temperature at a distance far away from the BH is significantly suppressed compared with the naive expectation. The main reason for these counterintuitive results comes from the fact that the size of the BH is too small that particles of Hawking radiation goes far away within the typical time scale of interactions.
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来源期刊
Journal of Cosmology and Astroparticle Physics
Journal of Cosmology and Astroparticle Physics 地学天文-天文与天体物理
CiteScore
10.20
自引率
23.40%
发文量
632
审稿时长
1 months
期刊介绍: Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.
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