Footprints of Axion-Like Particle in Pulsar Timing Array Data and JWST Observations

Footprints of Axion-Like Particle in Pulsar Timing Array Data and JWST Observations
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脉冲星计时阵列数据和 JWST 观测中类轴子粒子的足迹

DOI:
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发表时间:
2023
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通讯作者:
B. Zhu
B. Zhu
中科院分区:
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文献类型:
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作者:
Shu;M. Khlopov;Xuewen Liu;Leiye Wu;Yongcheng Wu;B. Zhu

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最近,脉冲星定时阵列(PTA)合作独立报道了随机引力波背景(SGWB)的证据,它可以揭示早期宇宙中不均匀性的原始种子的形成。利用从PTAs数据中得到的SGWB参数,我们可以从类轴子粒子(ALP)的畴壁预测原始黑洞(PBH)团。这些原始种子可以自然地为詹姆斯·韦伯太空望远镜(JWST)指出的早期活动星系核(AGN)形成提供解决方案。此外,ALP的质量也受到限制,$m_a \sim 10^{-15}-10 ^{-14}$ eV,在即将到来的腔实验的范围内。
Very recently Pulsar Timing Array (PTA) collaborations have independently reported the evidence for a stochastic gravitational-wave background (SGWB), which can unveil the formation of primordial seeds of inhomogeneities in the early universe. With the SGWB parameters inferred from PTAs data, we can make a prediction of the Primordial Black Hole (PBH) clusters from the domain walls of axion-like particles (ALPs). These primordial seeds can naturally provide a solution to the early Active Galactic Nuclei (AGN) formation indicated by James Webb Space Telescope (JWST). Besides, the mass of ALP is also constrained, $m_a \sim 10^{-15}-10^{-14}$ eV, within the reach of upcoming cavity experiments.