TITLE: GCN CIRCULAR NUMBER: 8329 SUBJECT: GRB081003C: GLAST Burst Monitor detection DATE: 08/10/06 23:54:14 GMT FROM: Alexander van der Horst at NASA/MSFC A.J. van der Horst (NASA/ORAU) reports on behalf of the Fermi GBM Team: "At 15:27:17 UT on 3 October 2008, the Fermi GBM triggered and located GRB 081003C (trigger 244740438 / 081003.644). The on-ground calculated location, using the GBM trigger data, is RA = 270.0, Dec = +20.9 (J2000 degrees, equivalent to 18h 00m, +20d 54'), with an uncertainty of 3.7 degrees (radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). The angle from the Fermi LAT boresight is 48 degrees. This GRB has several peaks, with T90 (50-300 keV) = 67 s and T50 (50-300 keV) = 31 s. The time-averaged spectrum (8-1000 keV) from T0-4 to T0+51 s is best fit by a power law with index = -1.41 +/- 0.06. The fluence (50-300 keV) is 5.4E-6 erg/cm^2. The spectral analysis results presented above are preliminary; the final results will be published in the GBM GRB Catalog."