67 citations · 521 across the 15 of their papers we have counts for
15 papers
Search for a Gravitational-Wave Background from Sound Speed Resonance from Advanced LIGO and Advanced Virgo's First Three Observing Runs
You Wu, Zu-Cheng Chen, Lang Liu
We search for a stochastic gravitational-wave background (SGWB) originating from scalar-induced gravitational waves (SIGWs) with the sound speed resonance (SSR) effect using data f…
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…
Constraining the Merger History of Primordial-Black-Hole Binaries from GWTC-3
Lang Liu, Zhi-Qiang You, You Wu +1
Primordial black holes (PBHs) can be not only cold dark matter candidates but also progenitors of binary black holes observed by LIGO-Virgo-KAGRA (LVK) Collaboration. The PBH mass…
Novel constraints on fifth forces and ultralight dark sector with asteroidal data
Yu-Dai Tsai, Youjia Wu, Sunny Vagnozzi +1
We study for the first time the possibility of probing long-range fifth forces utilizing asteroid astrometric data, via the fifth force-induced orbital precession. We examine nine…
The merger history of primordial-black-hole binaries
You Wu
As a candidate of dark matter, primordial black holes (PBHs) have attracted more and more attentions as they could be possible progenitors of the heavy binary black holes (BBHs) ob…
Hot subdwarf B stars with neutron star components II: Binary population synthesis
You Wu, Xuefei Chen, Hailiang Chen +2
Context: Subdwarf B stars (sdBs) play a crucial role in stellar evolution, asteroseismology, and far-UV radiation of early-type galaxies, and have been intensively studied with obs…
Formation of hot subdwarf B stars with neutron star components
You Wu, Xuefei Chen, Zhenwei Li +1
Binary population synthesis predicts the existence of subdwarf B stars (sdBs) with neutron star (NS) or black hole (BH) companions. We systematically investigate the formation of s…
non-linear massive gravity and the cosmic acceleration
You Wu, Zu-Cheng Chen, Jiaxin Wang +1
Inspired by the non-linear massive gravity, we propose a new kind of modified gravity model, namely non-linear massive gravity, by adding the dRGT mass term reformula…
Post-Newtonian Approximation of Teleparallel Gravity Coupled with a Scalar Field
Zu-Cheng Chen, You Wu, Hao Wei
We use the parameterized post-Newtonian (PPN) formalism to explore the weak field approximation of teleparallel gravity non-minimally coupling to a scalar field , with arbitrary…