TITLE: GCN CIRCULAR NUMBER: 19041 SUBJECT: GRB 160219A: Fermi GBM detection DATE: 16/02/21 10:45:48 GMT FROM: Hoi-Fung Yu at MPE H.-F. Yu (MPE) and O. J. Roberts (UCD), report on behalf of the Fermi GBM Team: "At 06:56:18.14 UT on the 19th of February 2015, the Fermi Gamma-Ray Burst Monitor (GBM) triggered and located GRB 160219A (trigger 477557782 / 160219289). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 350.6, Dec = -29.7 deg. (J2000 degrees, equivalent to 23h 22m 24s, -29d 42'), with a statistical uncertainty of 6.34 degrees (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 angle from the Fermi LAT boresight for the IPN position is 51 degrees (Svinkin et al. 2016, GCN 19035). The GBM light curve consists of two short pulses with a duration (T90) of about 3.5 s (50-300 keV). The time-averaged spectrum from T0-0.064 s to T0+3.456 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.97 +/- 0.15 and the cutoff energy, parameterized as Epeak, is 689 +/- 308 keV. The event fluence (10-1000 keV) in this time interval is (1.25 +/- 0.12)E-06 erg/cm^2. The 64-ms peak photon flux measured starting from T0+0.00 s in the 10-1000 keV band is 19.2 +/- 1.1 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."