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GCN Circular 2296

IPN triangulation of GRB030711 (annulus, =SGR0525-66?)
2003-07-11T18:11:13Z (21 years ago)
Kevin Hurley at UCBerkeley/SSL <>
K. Hurley and T. Cline, on behalf of the Ulysses and Mars Odyssey GRB teams,

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:

Mars Odyssey (HEND and GRS) and INTEGRAL (SPI-ACS) observed this burst
at 00243 seconds.  As observed by INTEGRAL, it had a duration of
approximately 0.5 s.  We have triangulated it to a preliminary annulus
centered at RA, Decl (2000)=341.562, -13.235 degrees, whose radius is
81.798 +/- 0.093 degrees (3 sigma).  We note that this annulus includes
the position of SGR0525-66, although the probability that this could
occur by chance is not negligible.  As this burst was not observed by
Ulysses, a small error box cannot be obtained for it, but if it was
observed by other near-Earth spacecraft, it may be possible to obtain
an error box for it.  The non-detection by Ulysses implies that this
event had a hard spectrum.
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