A. Yoshida, G. Ricker, J-L. Atteia, N. Kawai, D. Lamb, and S. Woosley,
on behalf of the HETE Science Team;
M. Arimoto, T. Donaghy, E. Fenimore, M. Galassi, C. Graziani,
N. Ishikawa, A. Kobayashi, J. Kotoku, M. Maetou, M. Matsuoka,
Y. Nakagawa, T. Sakamoto, R. Sato, T. Shimokawabe, Y. Shirasaki,
S. Sugita, M. Suzuki, T. Tamagawa, and K. Tanaka, on behalf of the HETE
N. Butler, G. Crew, J. Doty, G. Prigozhin, R. Vanderspek,
J. Villasenor, J. G. Jernigan, A. Levine, 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, and K. Hurley, on behalf of the HETE
The HETE FREGATE, WXM, and SXC instruments detected GRB 051021
(=H3947) at 13:21:57 UT (48117 SOD) on 21 October 2005. The
WXM flight localization was first reported in a GCN Notice issued
at 13:22:11 UT, which was 14s after the burst trigger.
Ground analysis of the WXM data produced a refined WXM localization that
was issued in a GCN Notice at 14:25:34 UT. This ground WXM localization
can be expressed as a circle of 7.5 arcminutes radius (90% confidence),
R.A. = 01h 56m 24s ; Dec. = +09d 07' 05" (J2000).
The SXC detected this event in its Y camera. Ground analysis of the SXC
data therefore produced a 1-dimensional location. The intersection of
this location with the WXM ground location was issued in a GCN Notice at
14:59:49 UT. This location can be expressed as a box with corners:
R.A. = 01h 56m 01.92s ; Dec. = +09d 02' 02.4"
R.A. = 01h 56m 54.00s ; Dec. = +09d 05' 16.4"
R.A. = 01h 56m 54.72s ; Dec. = +09d 07' 22.8"
R.A. = 01h 59m 57.12s ; Dec. = +09d 03' 46.8" (J2000).
Further analysis is in progress.