TITLE: GCN CIRCULAR NUMBER: 23898 SUBJECT: GRB 190215A: Fermi GBM detection DATE: 19/02/16 01:00:56 GMT FROM: Bagrat Mailyan at UAH B. Mailyan (UAH) and C. Meegan (UAH) report on behalf of the Fermi GBM Team: "At 18:31:22.48 UT on 15 February 2019, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 190215A (trigger 571948287 / 190215772). The on-ground calculated location, using the GBM trigger data, is RA, Dec = 340.4, +37.5 (J2000 degrees) with an uncertainty of 1.0 degree (radius, 1-sigma containment, statistical only; there is additionally a systematic error which we have characterized as a core-plus-tail model, with 90% of GRBs having a 3.7 deg error and a small tail suffering a larger than 10 deg systematic error. [Connaughton et al. 2015, ApJS, 216, 32]). The initial angle from the Fermi LAT boresight to the best location is 25 degrees. The GBM light curve consists of a bright FRED-like peak with multiple pulses within it, with a duration (T90) of about 23 s (50-300 keV). The time-averaged spectrum from T0+0 s to T0+23 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.18 +/- 0.03 and the cutoff energy, parameterized as Epeak, is 204 +/- 4 keV. The event fluence (10-1000 keV) in this time interval is (2.0 +/- 0.3)E-05 erg/cm^2. The 1s peak photon flux measured starting from T0+5.8 s in the 10-1000 keV band is 8.7 +/- 0.3 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."