GCN Circular 24814
E. Bissaldi (Politecnico & INFN Bari), O.J. Roberts (USRA/NASA) and C. Meegan (UAH) report on behalf of the Fermi GBM Team: "At 10:47:00.05 UT on 13 June 2019, the Fermi Gamma-Ray Burst Monitor (GBM) triggered and located GRB 190613B (trigger 582115625 / 190613449), which was also detected by the Swift/BAT (D'Ai et al. 2019, GCN 24807) 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-BAT position is 59 degrees. The GBM light curve consists of single bright peak with a duration (T90) of about 5 s (50-300 keV). The time-averaged spectrum from T0-1 s to T0+4 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.96 +/- 0.05 and the cutoff energy, parameterized as Epeak, is 334 +/- 35 keV. The event fluence (10-1000 keV) in this time interval is (4.4 +/- 0.2)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+2 s in the 10-1000 keV band is 7.5 +/- 0.3 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"