Constraining parameters of low mass merging compact binary systems with Einstein Telescope alone
Abstract
The Einstein Telescope (ET), a future thirdgeneration gravitational wave detector, will have detection sensitivity for gravitational wave signals down to 1 Hz. This improved lowfrequency sensitivity of the ET will allow the observation of low mass binaries for a longer period of time in the detection band before their merger. Because of an improved sensitivity as compared to current and advanced 2G detectors, the detection rate will also be greatly improved. Given the high detection rate of merging compact binaries with the ET, it will be a useful instrument to conduct population studies. In this paper, we present an algorithm to estimate the parameters of the low mass merging compact binary systems such as localization, chirp mass, redshift, mass ratios, and total mass of the source, which are crucial in order to estimate the capability of the ET to study various compact binary populations. For the compact binary population distributed uniformly in comoving volume, we find that with single ET, ≈1 % of binaries can be localized within 800 square degrees. The values of chirp mass and total mass can be constrained within ≲5 % error, while z and D_{L} can be estimated with an error of ≲15 % for effective SNR ≳50 using single ET.
 Publication:

Physical Review D
 Pub Date:
 December 2022
 DOI:
 10.1103/PhysRevD.106.123014
 arXiv:
 arXiv:2107.11198
 Bibcode:
 2022PhRvD.106l3014S
 Keywords:

 Astrophysics  High Energy Astrophysical Phenomena;
 General Relativity and Quantum Cosmology
 EPrint:
 24 pages, 16 figures. Published in Physical Review D