Footprints of Axion-Like Particle in Pulsar Timing Array Data and James Webb Space Telescope Observations
High Energy Physics - Phenomenology
2024-09-10 v2 Cosmology and Nongalactic Astrophysics
Astrophysics of Galaxies
Abstract
Several Pulsar Timing Array (PTA) collaborations have recently 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 seeds for early galaxy formation from the domain walls in the axion-like particles (ALPs) field distribution. This also naturally provides a solution to the observation of high redshifts by the James Webb Space Telescope. The predicted photon coupling of the ALP is within the reach of future experimental searches.
Keywords
Cite
@article{arxiv.2306.17022,
title = {Footprints of Axion-Like Particle in Pulsar Timing Array Data and James Webb Space Telescope Observations},
author = {Shu-Yuan Guo and Maxim Khlopov and Xuewen Liu and Lei Wu and Yongcheng Wu and Bin Zhu},
journal= {arXiv preprint arXiv:2306.17022},
year = {2024}
}
Comments
9 pages, 4 figures. version published in Sci. China-Phys. Mech. Astron. November 2024 Vol.67 No.11: 111011