Gaia Photometric Science Alerts

Understand

Since July 2014, the Gaia mission has been engaged in a high-spatial-resolution, time-resolved, precise, accurate astrometric, and photometric survey of the entire sky.

• Aims: We present the Gaia Science Alerts project, which has been in operation since 1 June 2016.
• We describe the system which has been developed to enable the discovery and publication of transient photometric events as seen by Gaia.
• Methods: We outline the data handling, timings, and performances, and we describe the transient detection algorithms and filtering procedures needed to manage the high false alarm rate.