GCN Circular 16775
Bin-Bin Zhang (UAH) reports on behalf of the Fermi GBM Team: "At 06:17:22.79 UT on 01 September 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140901B (trigger 431245045 / 140901262), which was also detected by the Swift/BAT (Cummings 2014, GCN 16773) The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight is 34 degrees. The GBM light curve consists of a single pulse with a duration (T90) of about 65 +/- 14 s (50-300 keV). The time-averaged spectrum from T0-0 s to T0+65 s is best fit by a power law function with an exponential high-energy cutoff. ��The power law index is -1.2 +/- 0.2 ��and the cutoff energy, parameterized as Epeak, is 219 +/- 82 keV. The event fluence (10-1000 keV) in this time interval is (3.8 +/- 0.6)E-06 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+0.9 s in the 10-1000 keV band is 2.6 +/- 0.2 ��ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."