Formation of Supermassive Nuclei of Black Holes in the Early Universe by the Mechanism of Scalar-Gravitational Instability. I. Local Picture\({}^{1}\)

IF 1.2 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Gravitation and Cosmology Pub Date : 2023-11-23 DOI:10.1134/S0202289323040102
Yu. G. Ignat’ev
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Abstract

On the basis of the formulated and proven similarity properties of cosmological models based on a statistical system of degenerate scalarly charged fermions, as well as the previously identified mechanism of scalar-gravitational instability of cosmological models, a numerical and analytical study of the formation of supermassive black hole nuclei in the early Universe is carried out. A mathematical model of the evolution of spherical perturbations is constructed, making itt possible to reveal the main regularities of the process of evolution of collapsing masses and the dependence of the parameters of forming black holes on the fundamental parameters of the cosmological model and the wavelength of gravitational perturbations. In this case, the mass loss of the black hole due to quantum evaporation is taken into account. A stable tendency for the early formation of supermassive black hole nuclei in the class of cosmological models under study is shown, and a close connection between the growth of masses of spherical perturbations and the nature of the singular points of these models is shown.

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早期宇宙中超大质量黑洞核形成的尺度引力不稳定性机制。一、当地情况\({}^{1}\)
基于简并标量带电费米子统计系统的宇宙学模型的公式化和证明的相似性,以及先前确定的宇宙学模型的标量引力不稳定性机制,对早期宇宙中超大质量黑洞核的形成进行了数值和解析研究。建立了球面微扰演化的数学模型,揭示了坍缩质量演化过程的主要规律,揭示了黑洞形成参数与宇宙学模型基本参数和引力微扰波长的关系。在这种情况下,由于量子蒸发,黑洞的质量损失被考虑在内。在所研究的一类宇宙学模型中,表明了超大质量黑洞核早期形成的稳定趋势,并表明了球面扰动质量的增长与这些模型奇点的性质之间的密切联系。
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来源期刊
Gravitation and Cosmology
Gravitation and Cosmology ASTRONOMY & ASTROPHYSICS-
CiteScore
1.70
自引率
22.20%
发文量
31
审稿时长
>12 weeks
期刊介绍: Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoples’ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community
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