GCN Circular 2557
Subject
GRB 040329: hard burst detected by Konus-Wind and Helicon - Coronas-F
Date
2004-03-31T13:50:06Z (20 years ago)
From
Dmitry Frederiks at Ioffe Institute <fred@mail.ioffe.ru>
S. Golenetskii, E. Mazets, V. Pal'shin, and D. Frederiks on behalf
of Konus-Wind and Helicon/Coronas-F teams,
T. Cline, on behalf of the Konus GRB team,
A hard GRB 040329 was detected by Konus-Wind at 11:10:50.060 UT
and Helicon-Coronas-F at 11:10:51.757 UT.
It had a duration of approximately 2.3s,
fluence 4.6x10-5 erg/cm2, and peak flux 1.2x10-4 erg/(cm2 s),
both in 20-8000 keV range. Preliminary spectral analysis gives
a value of Ep = 1900 +/- 100 keV.
We have triangulated it to a preliminary annulus centered at
RA(2000) = 114.620 deg,
Decl(2000) = 22.903 deg,
Radius = 59.12 +/- 0.16 degrees (3 sigma ).
In addition, the Konus ecliptic latitude response limits the
arrival directions to an ecliptic latitude of -30 +/- 7 degrees.