超辐射达尔文主义:最轻的轴子的生存

IF 5.9 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Daniel Neves and João G. Rosa
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引用次数: 0

摘要

我们研究了质量相当的多个轴子场的旋转黑洞超辐射不稳定性的动力学演化,其动机是弦理论构造,它通常表现出大量质量范围广泛的轻轴子。我们特别表明,即使较重轴子云增长较快,但随着黑洞放大较轻轴子场,它们最终会被黑洞重新吸收,这类似于生态系统中不同物种争夺相同资源的动态。我们还在研究中纳入了吸积和引力波发射的影响。我们进一步证明,质量相当的多个轴心物种的存在可能会对黑洞双星合并残余物周围的轴心云产生的随机引力波背景产生重大影响,这可以用计划中的探测器来探测。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Superradiant Darwinism: survival of the lightest axion
We study the dynamical evolution of superradiant instabilities of rotating black holes for multiple axion fields with comparable masses, motivated by string theory constructions, which typically exhibit a large number of light axions, with a broad range of masses. We show, in particular, that even though superradiant clouds for the heavier axion species grow faster, they are eventually reabsorbed by the black hole as the latter amplifies the lighter axion field(s), analogously to the dynamics of different species competing for the same resources in an ecosystem. We also incorporate in our study the effects of accretion and gravitational wave emission. We further demonstrate that the existence of multiple axion species with comparable masses may have a substantial impact on the stochastic gravitational wave background produced by axion clouds around black hole binary merger remnants, which could be probed with planned detectors.
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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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