Beyond GWTC-3: analyzing and verifying new gravitational-wave events from community catalogues

Abstract

The public release of data from the LIGO and Virgo detectors has enabled the identification of potential gravitational wave signals by independent teams using alternative methodologies. In addition to the LIGO-Virgo-KAGRA (LVK) collaboration’s GWTC-3 catalogue there have been several additional works claiming the detection of signals in the data from the first three observing runs. In this paper we present an analysis of these new signals using the same analysis workflow which was used to generate the GWTC-2.1 and GWTC-3 catalogues published by the LVK, matching the analysis configuration as closely as possible, and we provide our parameter estimation results in a format comparable to those of the GWTC-3 data release for 57 events not previously analyzed in LVK analyses. We find our results to be broadly consistent with those published by other groups. We also include a discussion of the workflow developed for this analysis.