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
复制标题
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
期刊:
影响因子:
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通讯作者:
B. Zhu
中科院分区:
文献类型:
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作者:
Shu;M. Khlopov;Xuewen Liu;Leiye Wu;Yongcheng Wu;B. Zhu
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.