Gaia Photometric Science Alerts

To browse the alerts published so far, please see the Alert Index tab. The table provides links to the per-source alert pages, including lightcurves and BP/RP spectra. Visit the Tools page to find more ways to keep you up-to-date with the Gaia Alerts Project.


News 3 Dec 2023: Since August 2023, GSA operations have been continuing after refactoring and streamlining of database.

News 3 May 2023: Motivated by the recent developments in multi-messenger astronomy, and in particular the detection of an electro-magnetic counterpart to the gravitational wave (GW) event GW170817, and by the non-detections of subsequent GW events involving at least one neutron star, a contribution from Gaia to this emerging field has been discussed. LIGO-Virgo-KAGRA run number 4 is expected to start in May this year, and will include public releases of high signal-to-noise GW events. Gaia Photometric Science Alerts will contribute to the search for the optical counterpart of any new GW event by releasing our extra (though less pure) alert stream (GaiaX, Access the GaiaX Alert stream). The data will be published with an approximately daily cadence. See IOW20210825, Kostrzewa-Rutkowska et al. 2020, and Hodgkin et al. 2021 for more details.

News: Gaia Photometric Science Alerts and Gravitational Wave Triggers (The test phase has ended.)

Gaia coverage

If you publish any results based on these Gaia discoveries, we would appreciate an acknowledgement along the lines of: We acknowledge ESA Gaia, DPAC and the Photometric Science Alerts Team (