非高斯扰动对原始超大质量黑洞的稳健μ-失真约束

IF 5.3 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Christian T. Byrnes, Julien Lesgourgues and Devanshu Sharma
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引用次数: 0

摘要

通过原始起源来解释超大质量黑洞的起源受到了原始扰动振幅的严格光谱畸变约束的严峻挑战。我们在另一篇论文中首次计算了μ约束如何被非高斯性所改变,在此我们首次提出了在大的非高斯性条件下原始黑洞形成的稳健约束。即使是无限 fNL 极限的非高斯性也是不够的,但是ℛ = ℛG5形式的更高阶非高斯性可能允许形成任何质量的原始黑洞,而不会与扭曲约束相冲突。我们要提醒的是,这种极端模型还面临其他挑战。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Robust μ-distortion constraints on primordial supermassive black holes from non-Gaussian perturbations
Explaining the origin of supermassive black holes via a primordial origin is severely challenged by the tight spectral distortion constraints on the amplitude of the primordial perturbations. Following the first calculation of how the μ constraints are modified by non-Gaussianity in a companion paper, we here make the first robust constraints on primordial black hole formation under large non-Gaussianity. Even the infinite fNL limit is insufficiently non-Gaussian but much higher-order non-Gaussianity of the form ℛ = ℛG5 may allow the formation of any mass primordial black hole without conflicting with distortion constraints. We caution that such extreme models face other challenges.
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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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