3 papers
astro-ph.CO2025
Enhanced Localization of Dark Lensed Gravitational Wave Events Enables Host Galaxy Identification and Precise Cosmological Inference
Zhiwei Chen, Qingjuan Yu, Youjun Lu +1
Lensed gravitational wave (GW) events are expected to be powerful new probes of cosmology, contingent on redshift measurement by electromagnetic observations. Host galaxy identific…
astro-ph.HE2024
Constraining the origin of the nanohertz gravitational-wave background by pulsar timing array observations of both the background and individual supermassive binary black holes
Yunfeng Chen, Qingjuan Yu, Youjun Lu
The gravitational waves (GWs) from supermassive binary black holes (BBHs) are long sought by pulsar timing array experiments (PTAs), in the forms of both a stochastic GW background…
astro-ph.HE2024
On the Cosmic Variance of the Merger Rate Density of Binary Neutron Stars
Zhiwei Chen, Youjun Lu, Jie Wang +3
The cosmic variance on the star formation history may lead to bias to the merger rate density estimation of binary neutron star (BNS) mergers by the compact binary population synth…