GCN Circular 27112
S. Lesage, B. Mailyan, S. Poolakkil, and C. Meegan (all UAH) report on behalf of the Fermi GBM Team: "At 09:07:25.03 UT on 16 February 2020, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 200216A (trigger 603536850 / 200216380) which was also detected via Swift ground analysis (DeLaunay et al. 2020, GCN 27107) The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight at the GBM trigger time is 68 degrees. The GBM light curve consists of a single bright pulse followed by some extended emission with a duration (T90) of about 8.0 s (10-1000 keV). The time-averaged spectrum from T0-5.0 s to T0+2.5 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is 0.9 +/- 0.9 and the cutoff energy, parameterized as Epeak, is 180.0 +/- 34.0 keV The event fluence (10-1000 keV) in this time interval is (4.4 +/- 0.9)E-07 erg/cm^2. The 1-sec peak photon flux measured starting from T0-4.16 s in the 10-1000 keV band is 0.92 +/- 0.1 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/"