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GCN Circular 10796

Konus-Wind observation of GRB 100522A
2010-05-25T12:21:36Z (14 years ago)
Dmitry Frederiks at Ioffe Institute <>
S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin,
P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf
of the Konus-Wind team, report:

The long GRB 100522A (Swift-BAT trigger=422783;
Troja et al., GCN 10784; Barthelmy et al., GCN 10788)
triggered Konus-Wind at T0=13549.843s UT (03:45:49.843)

The burst light curve shows a single pulse
with a total duration of ~6 s.
The Konus-Wind light curve of this GRB is available at

As observed by Konus-Wind the burst
had a fluence of 1.7(-0.5, +0.3)x10-6 erg/cm2,
and a 256-ms peak flux measured from T0-0.256s
of 0.7(-0.2, +0.1)x10-6 erg/cm2/s
(both in the 20 keV - 2 MeV energy range).

The time-integrated spectrum of the burst (from T0 to T0+8.848 s)
is best fit in the 20 keV - 2 MeV range by a single power-law
model with a photon index of 2.9 (-/+0.5), chi2 = 78/69 dof.

All the quoted results are preliminary.
All the quoted errors are at the 90% confidence level.
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