GCN Circular 19289
O.J. Roberts (UCD), C.M. Hui (NASA/MSFC) report on behalf of the Fermi GBM Team: "At 01:28:52.52 UT on the 11th of April 2016, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 160411A (trigger 482030936 / 160411062), which was also detected by Swift (Page et al. 2016, GCN 19279). The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight at the GBM trigger time using the Swift XRT position is about 108 degrees. The GBM light curve consists of a weak, short burst with a duration (T90) of about 0.2 s (50-300 keV). The time-averaged spectrum from T0-0.51 s to T0-0.35 s is best fit by a power law function with an exponential high-energy cutoff function, with Epeak = 161 +/- 37 keV and alpha = 0.26 +/- 0.67. The event fluence (10-1000 keV) in this time interval is (1.38 +/- 0.30)E-07 erg/cm^2. The 64ms peak photon flux measured starting from T0-0.51 s in the 10-1000 keV band is 6.4 +/- 1.4 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."