1710.08924
The fast transient sky with Gaia
Wevers, et al
Each time a source passes within the Gaia field of view, it moves over 10 CCDs in 45 s: a light curve with 4.5 s sampling is registered. Filter out instrumental and data processing artifacts in the light curve. Statistical methods to identify sources that show transient brightness variations on ~2hrs timescales + ability to detect transient brightness variations down to 0.3 mag on timescales from 15 seconds to several hours. In ~23.5 deg^2 on the sky, find 4 strong candidate fast transients. 2 are tentatively classified as M-dwarf star flares; one is probably a flare on a giant star, and one potentially a flare on a solar type star, based on archival data and timescales involved. This method can be added to the existing Gaia science alerts infrastructure for the near real-time public dissemination of fast transient events.
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