TITLE: GCN CIRCULAR NUMBER: 20703 SUBJECT: Konus-Wind observation of GRB 170219A (short/hard) DATE: 17/02/19 18:00:38 GMT FROM: Dmitry Frederiks at Ioffe Institute D. Frederiks, S. Golenetskii, R.Aptekar, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, A.Lysenko, A. Kozlova, and T. Cline, on behalf of the Konus-Wind team, report: The short/hard GRB 170219A (IPN triangulation: Svinkin et al., GCN 20702) triggered Konus-Wind at T0=186.125 s UT (00:03:06.125). The light curve shows a single, bright pulse with a duration of ~0.25s. The emission is seen up to ~5 MeV. As observed by Konus-Wind, the burst had a fluence of (1.6 ± 0.6)x10^-6 erg/cm2 and a 16-ms peak energy flux, measured from T0, of (2.8 ± 0.9)x10^-5 erg/cm2 (both in the 20 keV - 10 MeV energy range). The spectrum, measured from T0 to T0+0.064 s, is best fit in the 20 keV - 15 MeV range by a power law with exponential cutoff (CPL) model dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with alpha = -1.24 (-0.15,+0.17), Ep = 1620 (-660,+1920) keV, Cstat=47/56 dof. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB170219_T00186/ All the quoted errors are estimated at the 1 sigma confidence level. All the presented results are preliminary.