2017/03/31 by Kai Liao, Xi-Long Fan, Xuheng Ding +3 · 153 citations
Physics and Astronomy · #Amplitude #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Einstein Telescope #Gravitational wave #Hubble's law #Luminosity distance #Pulsars and Gravitational Waves Research #Redshift #Universe #Waveform #astro-ph.CO #gr-qc
paper · pdf · doi:10.1038/s41467-017-01152-9
published in Nature Communications 8(1), 1148 (Nature Portfolio)
openalex publication_date 2017/10/23 · arxiv created 2017/10/27 · arxiv updated 2017/10/30 · openalex created_date 2017/11/10 · openalex updated_date 2026/08/06
Abstract The standard siren approach of gravitational wave cosmology appeals to the direct luminosity distance estimation through the waveform signals from inspiralling double compact binaries, especially those with electromagnetic counterparts providing redshifts. It is limited by the calibration uncertainties in strain amplitude and relies on the fine details of the waveform. The Einstein telescope is expected to produce 10 4 –10 5 gravitational wave detections per year, 50–100 of which will be lensed. Here, we report a waveform-independent strategy to achieve precise cosmography by combining the accurately measured time delays from strongly lensed gravitational wave signals with the images and redshifts observed in the electromagnetic domain. We demonstrate that just 10 such systems can provide a Hubble constant uncertainty of 0.68% for a flat lambda cold dark matter universe in the era of third-generation ground-based detectors.