GWTC1: A GravitationalWave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
Abstract
We present the results from three gravitationalwave searches for coalescing compact binaries with component masses above 1 M_{☉} during the first and second observing runs of the advanced gravitationalwave detector network. During the first observing run (O 1 ), from September 12, 2015 to January 19, 2016, gravitational waves from three binary black hole mergers were detected. The second observing run (O 2 ), which ran from November 30, 2016 to August 25, 2017, saw the first detection of gravitational waves from a binary neutron star inspiral, in addition to the observation of gravitational waves from a total of seven binary black hole mergers, four of which we report here for the first time: GW170729, GW170809, GW170818, and GW170823. For all significant gravitationalwave events, we provide estimates of the source properties. The detected binary black holes have total masses between 18.6_{0.7}^{+3.2} M_{☉} and 84.4_{11.1}^{+15.8} M_{☉} and range in distance between 320_{110}^{+120} and 2840_{1360}^{+1400} Mpc . No neutron starblack hole mergers were detected. In addition to highly significant gravitationalwave events, we also provide a list of marginal event candidates with an estimated falsealarm rate less than 1 per 30 days. From these results over the first two observing runs, which include approximately one gravitationalwave detection per 15 days of data searched, we infer merger rates at the 90% confidence intervals of 110 3840 Gpc^{3} y^{1} for binary neutron stars and 9.7 101 Gpc^{3} y^{1} for binary black holes assuming fixed population distributions and determine a neutron starblack hole merger rate 90% upper limit of 610 Gpc^{3} y^{1} .
 Publication:

Physical Review X
 Pub Date:
 July 2019
 DOI:
 10.1103/PhysRevX.9.031040
 arXiv:
 arXiv:1811.12907
 Bibcode:
 2019PhRvX...9c1040A
 Keywords:

 Astrophysics  High Energy Astrophysical Phenomena;
 Astrophysics  Cosmology and Nongalactic Astrophysics;
 General Relativity and Quantum Cosmology
 EPrint:
 Total: 49 pages and 17 figures. Strain data are available from the Gravitational Wave Open Science Center at https://doi.org/10.7935/82H3HH23. Figures, data behind the figures, including posterior samples, are available from https://dcc.ligo.org/LIGOP1800307/public