TITLE: GCN CIRCULAR NUMBER: 27087 SUBJECT: GRB 200215A: Fermi GBM detection DATE: 20/02/15 22:21:54 GMT FROM: Suraj Poolakkil at UAH S.Poolakkil (UAH) and C. Meegan (UAH) report on behalf of the Fermi GBM Team: "At 14:39:31.85 UT on 15 February 2020, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 200215A (trigger 603470376 / 200215611), which was also detected by the Swift/BAT (Bernardini et al. 2020, GCN 27079). The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight at the GBM trigger time is 86 degrees. The GBM light curve consists of a single bright pulse followed by some extended emission with a duration (T90) of about 24 s (50-300 keV). The time-averaged spectrum from T0-4.09 s to T0+5.12 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.76 +/- 0.16 and the cutoff energy, parameterized as Epeak, is 162 +/- 25 keV. The event fluence (10-1000 keV) in this time interval is (1.858 +/- 0.175)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+0.06 s in the 10-1000 keV band is 3.7 +/- 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/"