Triggers:GRBs

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GRB-schematic lightcurve.png

Very short-lived optical transients associated with enormous gamma-ray outbursts. A catalogue of GRBs is available here. Comprehensive recent review on GRBs and their physics can be found in Piran,2005

  • time-scales from seconds to minutes
  • in maximum can reach up to few mag, but the whole range observed
  • host galaxy can be visible


GRB06-RAPTOR.png from Wozniak et al. 2006

GRB08-PI.png from Sokolowski et al.2009

Detecting GRBs with Gaia

Gaia detection efficiency for GRBs in per cents.

About 5% of GRBs is detectable by Gaia, with the highest efficiency close to the nodes. The main feature visible in the data is steady and rapid decline over AF CCDs. Time sampling at AF CCDs level is 4.4s per CCD. We also demand the transient to be visible in the second FOV (after 105 min).

Plot grb mag.png

GRB-fraction.png from Piran,2005