31 citations · 117 across the 22 of their papers we have counts for
5 papers · 1 filter
Probing scalar induced gravitational waves with PTA and LISA: The Importance of third order correction
Zhe Chang, Yu-Ting Kuang, Di Wu +1
We revisit the calculation of third order \acp{SIGW} and extend it from a monochromatic primordial power spectrum to a more general log-normal one. We investigate the impact of thi…
New constraints on primordial non-Gaussianity from missing two-loop contributions of scalar induced gravitational waves
Zhe Chang, Yu-Ting Kuang, Di Wu +2
We analyze the energy density spectrum of \acp{SIGW} using the NANOGrav 15-year data set, thereby constraining the primordial non-Gaussian parameter . For the firs…
Probing small-scale anisotropic inflation with stochastic gravitational-wave background
Yu-Ting Kuang, Jing-Zhi Zhou, Zhe Chang +1
In June 2023, multiple pulsar timing array (PTA) collaborations provided evidence for the existence of a stochastic gravitational-wave background (SGWB). As a significant source of…
Primordial black holes and scalar induced density perturbations: the effects of probability density functions
Jing-Zhi Zhou, Yu-Ting Kuang, Zhe Chang +2
We investigate the second order energy density perturbation induced by small-scale Gaussian and local-type non-Gaussian primordial curvature perturbations. The relative a…
Pulsars as candidates of LHAASO sources J2226+6057, J1908+0621 and J1825-1326: The leptonic origin
Zhe Chang, Yu-Ting Kuang, Xukun Zhang +1
Recently, from 12 -ray Galactic sources, the LHAASO has detected ultrahigh-energy photons up to 1.4PeV. The -ray spectra of the sources J2226+6057, J1908+0621, J1825-1326 and…