The Formalism of Milky-Way Antimatter-Domains Evolution

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS
Galaxies Pub Date : 2023-03-22 DOI:10.3390/galaxies11020050
M. Khlopov, O. Lecian
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引用次数: 1

Abstract

If baryosynthesis is strongly nonhomogeneous, macroscopic regions with antibaryon excess can be created in the same process from which the baryonic matter is originated. This exotic possibility can become real, if the hints to the existence of antihelium component in cosmic rays are confirmed in the AMS02 experiment, indicating the existence of primordial antimatter objects in our Galaxy. Possible forms of such objects depend on the parameters of models of baryosynthesis and evolution of antimatter domains. We elaborate the formalism of analysis of evolution of antibaryon domain with the account for baryon-antibaryon annihilation at the domain borders and possible “Swiss cheese” structure of the domain structure. We pay special attention to evolution of various forms of high, very high and ultrahigh density antibaryon domains and deduce equations of their evolution in the expanding Universe. The proposed formalism will provide the creation of evolutionary scenarios, linking the possible forms and properties of antimatter bodies in our Galaxy to the mechanisms of nonhomogeneous baryosynthesis.
银河系反物质域演化的形式主义
如果重子合成是强烈非均匀的,反重子过量的宏观区域可以在重子物质起源的相同过程中产生。如果宇宙射线中存在反氦成分的暗示在AMS02实验中得到证实,表明银河系中存在原始反物质物体,这种奇特的可能性就会成为现实。这些物体的可能形式取决于重子合成模型的参数和反物质域的演化。我们阐述了反重子域演化分析的形式,并考虑了域边界重子-反重子湮灭和域结构可能的“瑞士奶酪”结构。我们特别关注各种形式的高密度、超高密度和超高密度反重子域的演化,并推导出它们在膨胀的宇宙中的演化方程。提出的形式主义将提供进化场景的创造,将我们银河系中反物质体的可能形式和性质与非均匀重子合成机制联系起来。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Galaxies
Galaxies Physics and Astronomy-Astronomy and Astrophysics
CiteScore
4.90
自引率
12.00%
发文量
100
审稿时长
11 weeks
期刊介绍: Es una revista internacional de acceso abierto revisada por pares que proporciona un foro avanzado para estudios relacionados con astronomía, astrofísica y cosmología. Areas temáticas Astronomía Astrofísica Cosmología Astronomía observacional: radio, infrarrojo, óptico, rayos X, neutrino, etc. Ciencia planetaria Equipos y tecnologías de astronomía. Ingeniería Aeroespacial Análisis de datos astronómicos. Astroquímica y Astrobiología. Arqueoastronomía Historia de la astronomía y cosmología. Problemas filosóficos en cosmología.
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