轴子星：质量函数和约束条件

IF 5.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of Cosmology and Astroparticle Physics Pub Date : 2024-08-12 DOI:10.1088/1475-7516/2024/08/023

Jae Hyeok Chang, Patrick J. Fox and Huangyu Xiao

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引用次数: 0

摘要

QCD轴子和类轴子粒子作为主要的暗物质候选粒子，如果在暴胀之后佩奇-奎因对称性被打破，也会对暗物质子结构产生有趣的影响。在这种情况下，小尺度上的轴心扰动将导致在物质-辐射相等时形成轴心小团，并随后形成轴心星。这种紧凑的天体为间接搜索轴子打开了新的窗口。我们根据最近的轴子小星团研究和玻色星模拟计算出轴子星的质量函数。应用这一质量函数，我们发现质量为1.8 × 10-21 eV 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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Axion stars: mass functions and constraints

The QCD axion and axion-like particles, as leading dark matter candidates, can also have interesting implications for dark matter substructures if the Peccei-Quinn symmetry is broken after inflation. In such a scenario, axion perturbations on small scales will lead to the formation of axion miniclusters at matter-radiation equality, and subsequently the formation of axion stars. Such compact objects open new windows for indirect searches for axions. We compute the axion star mass function based on recent axion minicluster studies and Bose star simulations. Applying this mass function, we find post-inflation axion-like particles with masses 1.8 × 10-21 eV

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来源期刊

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.