Einstein Telescope (ET) is a 3rd generation gravitational-wave (GW) detector that is currently undergoing a design study. ET can detect millions of compact binary mergers up to redshifts 2-8. A small fraction of mergers might be observed in coincidence as gamma-ray bursts, helping to measure both the luminosity distance and red-shift to the source. By fitting these measured values to a cosmological model, it should be possible to accurately infer the dark energy equation-of-state, dark matter and dark energy density parameters. ET could, therefore, herald a new era in cosmology.
@article{arxiv.0906.4151,
title = {Cosmography with the Einstein Telescope},
author = {B. S. Sathyaprakash and Bernard Schutz and Chris Van Den Broeck},
journal= {arXiv preprint arXiv:0906.4151},
year = {2011}
}