Gravitational Wave
Open Science Center

Discover Gravitational-Wave Observatory Data,
Tutorials, and Software Tools.

Event
Catalog

      The Gravitational-wave Transient Catalog (GWTC) is a cumulative set of
      events detected by LIGO, Virgo, and KAGRA.
    

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Open Data Workshop

      Participants will receive a crash-course in gravitational-wave data
      analysis that includes lectures, software tutorials, and a data challenge.
    

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Tutorials

      Learn with tutorials that will lead you step-by-step through some common
      data analysis tasks.
    

News

OSDF

CVMFS Deprecation Notice

The CVMFS software tool to download gravitational-wave data locally in your machine will be discontinued and replaced by the Open Science Grid's Open Science Data Federation (OSDF) service. If you were using CVMFS before, read our new documentation page to learn how to make the switch to OSDF.

GW231123 Data Released

Read the notes for the release of the GW231123_135430 event! GW231123 is the merger of the most massive black holes ever observed with gravitational waves. The merger produced a final black hole more than 225 times the mass of our Sun. The signal was observed during the fourth observing run (O4) of the LVK network on November 23, 2023.

GW231123

API v2

New API Version

Due to the growing number of event detections expected in the coming observing runs, we upgraded our GWOSC REST API to Version 2 to handle larger responses and high-frequency request demand. While the data content remains the same, the new version has reorganized its resources, and added pagination and throttling.