Difference between revisions of "Triggers:GRBs"
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[[File:GRB08-PI.png|400px]] from [http://arxiv.org/abs/0903.2998 Sokolowski et al.2009] | [[File:GRB08-PI.png|400px]] from [http://arxiv.org/abs/0903.2998 Sokolowski et al.2009] | ||
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| + | == Detecting GRBs with Gaia == | ||
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| + | [[File:plot_grb_eff.png|400px|Thumb Gaia detection efficiency for GRBs in per cents.]] | ||
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| + | Only about 1 per cent of GRBs are detectable by Gaia. 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. | ||
| + | If we also demand the transient to be visible in the second FOV (after 105 min), the efficiency drops dramatically. | ||
Revision as of 16:39, 7 September 2009
Very short-lived optical transients associated with enormous gamma-ray outbursts. A catalogue of GRBs is available here.
- time-scales from seconds to minutes
- in maximum can reach up to few mag, but the whole range observed
- host galaxy can be visible
from Wozniak et al. 2006
Detecting GRBs with Gaia
Only about 1 per cent of GRBs are detectable by Gaia. 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. If we also demand the transient to be visible in the second FOV (after 105 min), the efficiency drops dramatically.
