TITLE: GCN CIRCULAR NUMBER: 25032 SUBJECT: Konus-Wind observation of GRB 190704A DATE: 19/07/08 13:14:30 GMT FROM: Anastasia Tsvetkova at Ioffe Institute A. Tsvetkova, S. Golenetskii, R.Aptekar, D. Frederiks, M. Ulanov, D. Svinkin, A. Lysenko, A. Kozlova and T. Cline on behalf of the Konus-Wind team, report: The short-duration, hard-spectrum (IPN triangulation: Svinkin et al., GCN 25024) triggered Konus-Wind at T0=22355.497 s UT (06:12:35.497). The burst light curve shows a pulse with a duration of ~1.5 s followed by a weaker pulse at ~T0+3.0. The emission is seen up to ~16 MeV. As observed by Konus-Wind, the burst had a fluence of 3.56(-1.26,+3.48)x10^-6 erg/cm2, and a 64-ms peak energy flux, measured from T0-0.310 s, of 5.03(-2.48,+6.16)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum of the burst (measured from T0 to T0+0.256 s) is best fit in the 20 keV - 16 MeV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with  alpha = -0.72(-0.41,+0.63), and Ep = 861(-420,+2298) keV (chi2 = 21/20 dof). The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB190704_T22355/ All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.