GCN Circular 1675

T. Tamagawa, Y. Shirasaki, C. Graziani, M. Matsuoka, K. Torii,
T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner,
T. Donaghy, Y. Nakagawa, D. Takahashi, M. Suzuki, R. Satoh,
and Y. Urata, on behalf of the HETE WXM Team;

G. Ricker, J-L Atteia, N. Kawai, D. Lamb, and S. Woosley on behalf of
the HETE Science Team;

N. Butler, G. Crew, J. Doty, G. Prigozhin, R. Vanderspek, J. Villasenor,
T. Cline, J. G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Azzibrouck,
J. Braga, R. Manchanda, and G. Pizzichini, on behalf of the HETE
Operations and HETE Optical-SXC Teams;

M. Boer, J-F Olive, J-P Dezalay, C. Barraud and K. Hurley on behalf of
the HETE FREGATE Team;

write:


At 07:01:02.93 UTC (25262.93 s UT) on 4 Nov 2002, the HETE FREGATE
and WXM instruments detected event H2434, a long, X-ray-rich GRB.

Ground analysis of the WXM data for the burst produced a location,
which was reported in a GCN Position Notice at 9:47 UT, 166 minutes
after the burst.  The WXM localization SNR was 5.  The WXM location
can be expressed as a 90% confidence rectangle that is approximately
24 arcminutes in width and 42 arcminutes in length.  The corners of
the rectangle lie at the following J2000 coordinates:

RA = 3h 52m 40.3s, Dec = 38o 19' 26"
RA = 3h 54m 44.6s, Dec = 38o 17' 10"
RA = 3h 54m 56.2s, Dec = 37o 34' 59"
RA = 3h 52m 52.6s, Dec = 37o 37' 12".

The burst duration in the 8-40 keV band was ~26s.  A total of 2120
counts were detected during that interval, corresponding to a fluence
of ~4 x 10-7 ergs cm-2 . The peak flux was >3 x 10-8 ergs cm-2 s-1
(i.e., >1 x Crab flux).

A light curve for GRB021104 is provided at the following URL:

http://space.mit.edu/HETE/Bursts/GRB021104/

This message is citable.