TITLE: GCN CIRCULAR NUMBER: 16070 SUBJECT: GRB 140402A: Fermi GBM detection DATE: 14/04/02 14:29:06 GMT FROM: Hoi-Fung Yu at MPE Subject: GRB 140402A: Fermi GBM detection Peter A. Jenke (UAH) and Hoi-Fung Yu (MPE) report on behalf of the Fermi GBM Team: "At 00:10:07.00 UT on 02 April 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140402A (trigger 418090209 / 140402007). It was also detected by Fermi/LAT (Bissaldi et al. 2014, GCN 16069). The GBM on-ground location is consistent with the LAT position. The GBM light curve consists of a single pulse with a duration (T90) of about 0.3 s (50-300 keV). The time-averaged spectrum from T0-0.064 s to T0+0.064 s is well fit by a simple power law function with index -1.2 +/- 0.1. The event fluence (10-1000 keV) in this time interval is (4.0 +/- 0.4)E-07 erg/cm^2. The 64 ms peak photon flux measured starting from T0-0.064 s in the 10-1000 keV band is 4.6 +/- 0.7 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."