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GCN Circular 1692

Subject
IPN triangulation of GRB021113 (=H2449; annulus)
Date
2002-11-14T18:40:49Z (22 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, Konus, and HETE GRB teams,

E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, and

G. Ricker, J-L Atteia, N. Kawai, D. Lamb, S. Woosley, J. Doty, R.
Vanderspek, J. Villasenor, G. Crew, G. Monnelly, N. Butler, J.G.
Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin, J. Braga, R.
Manchanda, G.  Pizzichini, Y. Shirasaki, C. Graziani, M. Matsuoka, T.
Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi,
T. Tavenner, T.  Donaghy, M. Boer, J-F Olive, and J-P Dezalay, on
behalf of the HETE GRB team, report:

Ulysses and Konus-Wind also observed this GRB (HETE 2449, GCN 1686).
We have triangulated it to a preliminary annulus centered  at RA, Decl(2000)=
1.104, -35.210 degrees, whose radius is 78.410 +/-  0.078 degrees (3 sigma ).
This intersects the WXM error box given in GCN 1686 at four points, and
reduces its area by about 30%.  The intersection points are:

  RA(2000)               DECL(2000)
1 h 32 m 44.80 s      40 o 26 ' 18.72 "
1 h 33 m 46.40 s      40 o 32 ' 15.63 "
1 h 35 m 00.19 s      40 o 27 ' 32.32 "
1 h 33 m 28.89 s      40 o 23 ' 31.68 "

This annulus can be improved, but as Mars Odyssey was recovering
from safe mode, a small error box cannot be derived for it.

A map will be posted shortly at ssl.berkeley.edu/ipn3/021113.
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