GraceDB Overview

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The Gravitational-Wave Candidate Event Database (GraceDB) is a service operated by the LIGO Scientific Collaboration. It provides a centralized location for aggregating and retrieving information about candidate gravitational-wave events. GraceDB provides an API for programmatic access, and a client package is available for interacting with the API.

Useful information

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Information about GW alerts and real-time data products is available in the LIGO/Virgo Public Alert Guide.

Real-time status of the LIGO Data Grid (LVK Credentials Required).

Need help? Send an email to computing-help@ligo.org, or LIGO/Virgo users can report issues on the GraceDB Gitlab page.

GraceDB Notifications

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GraceDB notifies registered users of Gravitational-Wave candidate detections in real-time during LIGO/Virgo/KAGRA observation periods. Current notifications mechanisms are:

• Phone alerts (calls/SMS) are enabled
• Email alerts are enabled
• igwn-alert messages to kafka://kafka.scimma.org/ are enabled
• Messages are sent to group: gracedb

Server code version: 2.29.0