纳赫兹随机引力波背景对超轻轴心粒子的影响

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

Journal of Cosmology and Astroparticle Physics Pub Date : 2024-11-26 DOI:10.1088/1475-7516/2024/11/045

Jing Yang, Ning Xie and Fa Peng Huang

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引用次数: 0

摘要

最近，不同的脉冲星定时阵列（PTA）合作组织，如 NANOGrav、欧洲 PTA、Parkes PTA 和中国 PTA，都观测到了 Hellings Downs 相关性。这些对银河系内最精确脉冲星的 PTA 测量首次证明了我们宇宙的随机引力波背景。我们通过研究引力原子不同能级之间轴子跃迁产生的引力波，研究了这一新发现的超轻轴子解释，引力原子由宇宙填充的克尔黑洞及其周围通过超辐射过程形成的轴子云组成。通过贝叶斯分析，我们证明这一新的观测结果自然允许对 10-21 eV 左右的超轻轴子进行解释，这与模糊暗物质的典型质量在量级上是一致的。

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Implication of nano-Hertz stochastic gravitational wave background on ultralight axion particles

Recently, the Hellings Downs correlation has been observed by different pulsar timing array (PTA) collaborations, such as NANOGrav, European PTA, Parkes PTA, and Chinese PTA. These PTA measurements of the most precise pulsars within the Milky Way show the first evidence for the stochastic gravitational wave background of our Universe. We study the ultralight axion interpretation of the new discovery by investigating the gravitational wave from axion transitions between different energy levels of the gravitational atoms, which are composed of cosmic populated Kerr black holes and their surrounding axion clouds formed through the superradiant process. By Bayesian analysis, we demonstrate that this new observation naturally admits an ultralight axion interpretation around 10-21 eV, which is consistent in magnitude with the typical mass of fuzzy dark matter.

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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.