Lunch talk on Mar. 22, 2022

Forecast for cosmological parameter estimation with gravitational-wave standard sirens from the third-generation ground-based gravitational-wave detectors

Speaker:Shangjie Jin (Northeastern University)

Venue:Video Conference

Time:12:30 PM, Tuesday, Mar. 22, 2022

Abstract:

The gravitational-wave (GW) standard siren observation opened a new window into studying the universe for cosmologists. Through the analysis of the GW waveform, the absolute luminosity distance of the GW source could be directly obtained which is called the standard siren. Combined with the redshift measurement, the luminosity distance-redshift relation could be used to study the expansion history of the universe. In this talk, I will introduce our recent works about the cosmological parameter estimation with the GW standard siren observation from the next-generation GW detectors, the Einstein Telescope and the Cosmic Explorer. Our results show that the next-generation GW detectors would play a key role in helping solve the Hubble tension and reveal the fundamental nature of dark energy.

Report PPT:SWIFAR_Shangjie Jin.pptx