Abstract
Abstract We present the third open gravitational-wave catalog (3-OGC) of compact-binary coalescences, based on the analysis of the public LIGO and Virgo data from 2015 through 2019 (O1, O2, O3a). Our updated catalog includes a population of 57 observations, including 4 binary black hole mergers that had not been previously reported. This consists of 55 binary black hole mergers and the 2 binary neutron star mergers, GW170817 and GW190425. We find no additional significant binary neutron star or neutron star–black hole merger events. The most confident new detection is the binary black hole merger GW190925_232845, which was observed by the LIGO–Hanford and Virgo observatories with astro > 0.99 ; its primary and secondary component masses are 20.2 − 2.5 + 3.9 M ⊙ and 15.6 − 2.6 + 2.1 M ⊙ , respectively. We estimate the parameters of all binary black hole events using an up-to-date waveform model that includes both subdominant harmonics and precession effects. To enable deep follow up as our understanding of the underlying populations evolves, we make available our comprehensive catalog of events, including the subthreshold population of candidates, and the posterior samples of our source parameter estimates.
Highlights
With the advent of the current generation of interferometric gravitational-wave detectors, the observation of gravitational waves from the coalescence of compactbinary mergers has become a regular and rapidly maturing component of astronomy
We provide a comprehensive catalog of gravitational waves from the coalescence of binary neutron star (BNS), neutron star–black hole (NSBH) and binary black hole (BBH) systems based on a deep archival search for compact-binary mergers of the public LIGO and Virgo data (Vallisneri et al 2015; Abbott et al 2021a)
We find that 55 binary black hole mergers have been observed from 2015-2019 along with 2 binary neutron star mergers
Summary
With the advent of the current generation of interferometric gravitational-wave detectors, the observation of gravitational waves from the coalescence of compactbinary mergers has become a regular and rapidly maturing component of astronomy. Dozens of binary black hole mergers have been reported from these observing runs, in addition to a handful of binary neutron star coalescences (Nitz et al 2019d; Venumadhav et al 2019a; Abbott et al 2019b, 2020b,a, 2017a). We provide a comprehensive catalog of gravitational waves from the coalescence of binary neutron star (BNS), neutron star–black hole (NSBH) and binary black hole (BBH) systems based on a deep archival search for compact-binary mergers of the public LIGO and Virgo data (Vallisneri et al 2015; Abbott et al 2021a). As in 2-OGC, for candidates consistent with the bulk of the increasing population of observed BBH mergers, we estimate the probability of astrophysical origin using the focused BBH region of our larger search. Our results are broadly consistent with the cumulative sum of previous catalogs (Nitz et al 2019a,d; Venumadhav et al 2019a; Abbott et al 2019b), including the recent analysis of O3a by the LVK collaboration (Abbott et al 2020b)
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