GCN Circular 8486
E. Bissaldi (MPE) and A. von Kienlin (MPE) report on behalf of the Fermi GBM Team: "At 12:45:24.08 UT on November 01, 2008, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 081101B (trigger 247236325 / 081101532). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 212.5 deg, Dec = -31.1 deg (equivalent to J2000 14h 10m, -31d 06'), with a statistical uncertainty of 1.9 degrees (radius, 1-sigma containment; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). The angle from the Fermi LAT boresight is 116 degrees. This GRB consists of one main emission phase comprising several overlapping pulses, with an estimated T90 (8-1000 keV) of about 8 s and T50 (8-1000 KeV) of about 5 s. The time-averaged spectrum from T0 to T0+7.680 s is best fit by a power law function with an exponential high energy cutoff. The power law index is -0.62 +/- 0.05 and the cutoff energy, parameterized as Epeak, is 550 +/- 30 keV. The event fluence (8-1000 keV) in this time interval is (1.60 +/- 0.03)E-05 erg/cm^2. The 1-sec photon flux measured starting from T0+1.536 s in the 8-1000 keV band is 10.3 +/- 0.3 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."