Footprints of Axion-Like Particle in Pulsar Timing Array Data and James Webb Space Telescope Observations

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.

9 pages, 4 figures. version published in Sci. China-Phys. Mech. Astron. November 2024 Vol.67 No.11: 111011

Cited by in corpus (16)

• Probing the equation of state of the early Universe with pulsar timing arrays
• Dark energy in light of the early JWST observations: case for a negative cosmological constant?
• Implications for the Supermassive Black Hole Binaries from the NANOGrav 15-year Data Set
• Scalar induced gravitational waves in light of Pulsar Timing Array data
• Negative cosmological constant in the dark energy sector: tests from JWST photometric and spectroscopic observations of high-redshift galaxies
• Confronting sound speed resonance with pulsar timing arrays
• Did we hear the sound of the Universe boiling? Analysis using the full fluid velocity profiles and NANOGrav 15-year data
• Single field inflation in the light of Pulsar Timing Array Data: Quintessential interpretation of blue tilted tensor spectrum through Non-Bunch Davies initial condition
• Simultaneously probing the sound speed and equation of state of the early Universe with pulsar timing arrays
• Exploring the NANOGrav Signal and Planet-mass Primordial Black Holes through Higgs Inflation
• Enhancement of gravitational waves at Q-ball decay including non-linear density perturbations
• Fast Likelihood-free Reconstruction of Gravitational Wave Backgrounds
• A trial to understand the supersymmetry relations through extension of the second quantized fermion and boson fields, either to strings or to odd dimensional spaces
• Proceedings to the 27th Workshop "What Comes Beyond the Standard Models" Bled, July 8-17, 2024
• Do we understand the internal spaces of second quantized fermion and boson fields, with gravity included? Relation with strings theories
• Quark mass matrices inspired by a numerical relation