GCN Circular 16900
V. Pelassa (UAH) reports on behalf of the Fermi GBM Team: "At 23:20:54.42 UT on 4 October 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 141004A (trigger 434157657 / 141004973), which was also detected by the Swift/BAT (D'Elia et al. 2014, GCN 16878) and the INTEGRAL/IBIS (Mereghetti et al 2014, GCN 16879). The GBM on-ground location is consistent with the Integral position, which lies at an angle of 100.4 degrees from the Fermi LAT boresight. The GBM light curve consists of a short FRED peak followed by a faint tail with a duration (T90) of about 3 s (50-300 keV). The time-averaged spectrum from T0-0.320 s to T0+0.768 s (main peak) is best fit by a power law function with an exponential high-energy cutoff. The power law index is -1.3 +/- 0.1 and the cutoff energy, parameterized as Epeak, is 147 +/- 28 keV (Castor stat 398.59 for 365 d.o.f.). The event fluence (10-1000 keV) in this time interval is (2.2 +/- 0.2)E-06 erg/cm^2. The 64-msec peak photon flux measured starting from T0+0.000 s in the 10-1000 keV band is 18 +/- 2 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."