Release List

Release Name	Description
GWTC	The Gravitational-wave Transient Catalog (GWTC) is a cumulative set of gravitational wave transients maintained by the LIGO/Virgo/KAGRA collaboration. The online GWTC contains confidently-detected events from multiple data releases.
GWTC-1-confident	Confident detections from "GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs." Additional data products, including PE samples and skymaps, are linked from the documentation at https://doi.org/10.7935/82H3-HH23
GWTC-1-marginal	Marginal candidates from "GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs." Additional data products are linked from the documentation at https://doi.org/10.7935/82H3-HH23
GWTC-2	Events from the O3A observation run of LIGO and Virgo, as described in the GWTC-2 catalog paper. These events are also included in a cumulative list of all GWTC events published to date. Details and additional data products are linked from the documentation page.
GWTC-2.1-auxiliary	This release/list/table contains candidates from GWTC-2 which, based on the [updated] analysis presented in the GWTC-2.1 catalog paper [https://arxiv.org/abs/2108.01045], do not satisfy the requirements/criteria for inclusion in the GWTC-2.1-confident or GWTC-2.1-marginal releases.
GWTC-2.1-confident	Confident events from the O3A observation run for LIGO and Virgo, as described in the GWTC-2.1 catalog paper. These events are also included in a cumulative list of all GWTC events published to date. Details and additional data products are linked from the documentation page.
GWTC-2.1-marginal	Marginal candidates from the O3A observation run for LIGO and Virgo, as described in the GWTC-2.1 catalog paper. Details and additional data products are linked from the documentation page.
GWTC-3-confident	Confident events from the O3b observing run for LIGO and Virgo, as described in the GWTC-3 catalog paper. These candidate events have a probability of astrophysical origin (probability of being a gravitational-wave signal versus being instrumental noise) assuming a compact binary (such as a binary black hole, neutron star-black hole binary or binary neutron star) coalescence source of greater than 0.5 based upon results of at least one of the search pipelines. These events are also included in a cumulative list of all GWTC events published to date. Details and additional data products are linked from the documentation page.
GWTC-3-marginal	Marginal candidates from the O3b observing run for LIGO and Virgo, as described in the GWTC-3 catalog paper. The "GW" prefix is omitted for candidates that have a plausible instrumental origin. Details and additional data products are linked from the documentation page.
Initial_LIGO_Virgo	Event data releases from initial LIGO and Virgo, 2005 - 2010. No astrophysical detections were made during this period.
O1_O2-Preliminary	Notable events in O1 and O2 initially published before the GWTC-1 catalog. These data releases may contain preliminary versions of data quality segments and calibration. For additional documentation released at the time of publication, see the "reference" link for each event. Updated information for these events may be found in the GWTC-1 catalog.
O3_Discovery_Papers	Notable events in O3 initially published outside of main catalogs. Associated data releases may contain preliminary versions of data quality segments and calibration. See documentation page for additional notes.
O3_IMBH_marginal	O3 IMBH marginal candidates associated with O3 observation run for LIGO and Virgo
O4_Discovery_Papers	O4 Discovery Papers Catalog associated with O4 observation run for LIGO and Virgo

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