TITLE: GCN CIRCULAR NUMBER: 25047 SUBJECT: Konus-Wind observation of GRB 190706D DATE: 19/07/10 12:32:13 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 GRB 190706D (IPN triangulation: Svinkin et al., GCN 25036) triggered Konus-Wind at T0=61390.044 s UT (17:03:10.044). The burst light curve shows a a single pulse which starts at ~T0-0.3 s and has a total duration of ~0.5 s. The emission is seen up to ~3 MeV. As observed by Konus-Wind, the burst had a fluence of 7.44 (-1.10,+1.24)x10^-7 erg/cm2, and a 64-ms peak energy flux, measured from T0+0.082 s, of 2.37 (-0.35,+0.40)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). Since the bulk of the burst emission was detected before the trigger, the spectral analysis was performed using the KW 3-channel light curve data. Modeling the KW 3-channel time-integrated spectrum (from T0-0.294 s to T0+0.172 s) by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) yields alpha = -0.71 (-0.30,+0.36), and Ep = 246 (-51,+70) keV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB190706_T61390/ All the quoted errors are at the 68% confidence level. All the quoted values are preliminary.