67 citations · 521 across the 15 of their papers we have counts for
7 papers · 1 filter
Simultaneously probing the sound speed and equation of state of the early Universe with pulsar timing arrays
Lang Liu, You Wu, Zu-Cheng Chen
Recently, several major pulsar timing array (PTA) collaborations have assembled strong evidence for the existence of a gravitational-wave background at frequencies around the nanoh…
Prospects for Taiji to detect a gravitational-wave background from cosmic strings
Zu-Cheng Chen, Qing-Guo Huang, Chang Liu +6
Recently, multiple pulsar timing array collaborations have presented compelling evidence for a stochastic signal at nanohertz frequencies, potentially originating from cosmic strin…
Exploring the NANOGrav Signal and Planet-mass Primordial Black Holes through Higgs Inflation
Zhu Yi, Zhi-Qiang You, You Wu +2
The data recently released by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) provides compelling evidence supporting the existence of a stochastic sign…
Model-independent reconstruction of the primordial curvature power spectrum from PTA data
Zhu Yi, Zhi-Qiang You, You Wu
Recently released data from pulsar timing array (PTA) collaborations provide strong evidence for a stochastic signal consistent with a gravitational-wave background, potentially or…
Confronting sound speed resonance with pulsar timing arrays
Jia-Heng Jin, Zu-Cheng Chen, Zhu Yi +3
The stochastic signal detected by pulsar timing arrays (PTAs) has raised great interest in understanding its physical origin. Assuming the signal is a cosmological gravitational-wa…
Constraints on primordial curvature power spectrum with pulsar timing arrays
Zhi-Qiang You, Zhu Yi, You Wu
The stochastic signal detected by NANOGrav, PPTA, EPTA, and CPTA can be explained by the scalar-induced gravitational waves. In order to determine the scalar-induced gravitational…
Constraints on peculiar velocity distribution of binary black holes using gravitational waves with GWTC-3
Zhi-Qiang You, Zu-Cheng Chen, Lang Liu +4
Peculiar velocity encodes rich information about the formation, dynamics, evolution, and merging history of binary black holes. In this work, we employ a hierarchical Bayesian mode…