TITLE: GCN CIRCULAR NUMBER: 27226 SUBJECT: Konus-Wind observation of GRB 200219A DATE: 20/02/26 16:09:54 GMT FROM: Dmitry Svinkin at Ioffe Institute D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, M. Ulanov, A. Tsvetkova, A. Lysenko, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team, report: The short-duration GRB 200219A (Fermi-GBM detection: The Fermi GBM team, GCN Circ. 27123; Bissaldi and Meegan, GCN Circ. 27137; Swift-BAT detection: Lien et al., GCN Circ. 27125; Laha et al., GCN Circ. 27148) triggered Konus-Wind at T0=27405.513 s UT (07:36:45.513). The burst light curve shows a single multi-peaked pulse which starts at ~T0-0.2 s and has a total duration of ~0.4 s. The emission is seen up to ~8 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB200219_T27405/ As observed by Konus-Wind, the burst had a fluence of 4.12(-0.61,+0.67)x10^-6 erg/cm2, and a 16-ms peak flux, measured from T0+0.182 s, of 2.34(-0.73,+0.76)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum of the burst (measured from T0 to T0+0.256 s) is best fit in the 20 keV - 8 MeV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with alpha = -0.06(-0.28,+0.35) and Ep = 952(-173,+218) keV (chi2 = 29/27 dof). Fitting by a GRB (Band) model yields the same alpha and Ep, and an upper limit on the high energy photon index: beta < -2.6 (chi2 = 29/26 dof). All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.