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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2248 SUBJECT: IPN triangulation of GRB030523 (annulus) DATE: 03/05/26 19:50:09 GMT FROM: Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu> K. Hurley, on behalf of the Ulysses GRB team, E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, T. Cline, on behalf of the Ulysses and Konus GRB teams, and A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL (SPI-ACS) team, report: Ulysses, INTEGRAL (SPI-ACS) and Konus-Wind observed this GRB at 55859 seconds. As observed by Ulysses, it had a duration of approximately 40 seconds, a 25-100 keV fluence of approximately 9.4E-06 erg/cm2, and a peak flux of approximately 8.1E-07 erg/cm2 s over .50 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 331.788, -34.484 degrees, whose radius is 61.851 +/- .073 degrees (3 sigma ). This annulus can be constrained and/or improved, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it.
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