Gravitational Wave (GW) astronomy provides an independent way to estimate cosmological parameters. The detection of GWs from a coalescing binary allows a direct measurement of its luminosity distance, so these sources are referred to as "standard sirens" in analogy to standard candles. In this talk, I investigate the impact of the Einstein Telescope, a third-generation detector which will detect tens of thousands of binary neutron stars. I focus on the non-flat CDM cosmology and some Dark Energy models. To evaluate the accuracy of cosmological parameters, I consider two types of mock datasets depending on whether or not a short Gamma-Ray Burst is detected and associated with the gravitational wave event using the THESEUS satellite. Depending on the mock dataset, different statistical estimators are applied: one assumes that the redshift is known, and another marginalizes over it, taking a specific prior distribution.
Previous Article in event
Previous Article in session
Next Article in event
Next Article in session
Forecasts for cosmological parameters through Einstein Telescope standard sirens
Published:
16 February 2023
by MDPI
in 2nd Electronic Conference on Universe
session Gravitation and Cosmology
Abstract:
Keywords: cosmological parameters; gravitational waves; neutron star mergers; Einstein Telescope
![Top](/images/top.png?version=d2a1072bcb778c072486fad356669189)