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GCN Circular 2458

Subject
IPN triangulation of GRB031201 (large error box)
Date
2003-12-02T19:21:52Z (20 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, Mars Odyssey, and
KONUS GRB teams,

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

I. Mitrofanov, S. Charyshnikov, V. Grinkov, A. Kozyrev, M. Litvak, and
A. Sanin, on behalf of the HEND-Odyssey GRB team,

W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr, on
behalf of the GRS-Odyssey GRB team, and

A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL
SPI-ACS GRB team, report:

Konus - Wind, Mars Odyssey - HEND, and INTEGRAL - SPI-ACS observed this
~30 s long burst at 22050 s.   We have triangulated it to a preliminary
annulus centered at RA, Decl(2000)= 351.816, -4.427 degrees, whose
radius is 73.774 +/-  0.086 degrees (3 sigma).  In addition, the Konus
ecliptic latitude response limits the arrival direction to ecliptic
latitudes above 50 degrees, that is, to those portions of the annulus
north of RA, Decl = 282, +27 degrees and 24, +65 degrees.

This localization may be improved, but a small error box cannot be
derived for this burst.
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