TITLE: GCN CIRCULAR NUMBER: 19628 SUBJECT: GRB 160629A: Fermi GBM observation DATE: 16/06/30 11:26:44 GMT FROM: Kilian Toelge at MPE Kilian Toelge (MPE) reports on behalf of the Fermi GBM Team: "At 22:19:38.28 UT on 26 June 2016, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 160629A (trigger 488931582 / 160629930), which was also detected by the INTEGRAL/IBAS (Gotz et al. 2016, GCN 19621) The GBM on-ground location is consistent with the INTEGRAL position. The GBM light curve consists of a long main peak and a short second peak after around 65 seconds. The duration (T90) is about 66.6 +/- 0.4 s (50-300 keV). The time-averaged spectrum from T0-4.1 s to T0+70.7 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -1.05 +/- 0.03 and the cutoff energy, parameterized as Epeak, is 295.50 +/- 19.30 keV The event fluence (10-1000 keV) in this time interval is (1.9 +/- 0.1)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+14.1 s in the 8-1000 keV band is 5.6 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."