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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2413 SUBJECT: IPN triangulation of GRB031007 (two large error boxes) DATE: 03/10/08 17:49:24 GMT FROM: Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu> K. Hurley and T. Cline, on behalf of the Ulysses and Konus GRB teams, and E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, report: Ulysses and Konus-Wind observed this GRB at 36731 seconds. As observed by Ulysses, it had a duration of approximately 5 seconds, a 25-100 keV fluence of approximately 1.9E-06 erg/cm2, and a peak flux of approximately 7.7E-07 erg/cm2 s over 0.25 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 167.741, 18.554 degrees, whose radius is 85.851 +/- 0.017 degrees (3 sigma). The Konus ecliptic latitude response constrains the arrival direction to a band between ecliptic latitudes -40 and -70 degrees, that is, to those portions of the annulus between RA, Decl= 88, -16 and 108, -49 degrees, and between RA, Decl= 139, -64 and 216, -57 degrees. This localization can be improved, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it.
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