TITLE: GCN CIRCULAR NUMBER: 19853 SUBJECT: Konus-Wind observation of GRB 160822A DATE: 16/08/24 11:37:30 GMT FROM: Anna Kozlova at Ioffe Institute A. Kozlova, S. Golenetskii, R. Aptekar, D. Frederiks, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, A. Lysenko, and T. Cline on behalf of the Konus-Wind team, report: The short-duration GRB 160822A (Fermi GBM detection: Hamburg et al., GCN Circ. 19845; IPN triangulation: Svinkin et al., GCN Circ. 19852) triggered Konus-Wind at T0=58061.153 s UT (16:07:41.153). The burst light curve shows a single pulse which starts at T0-0.016 s with a total duration of 0.03 s. The emission is seen up to ~10 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB160822_T58061/ As observed by Konus-Wind, the burst had a fluence of 7.60(-1.87,+5.46)x10^-7 erg/cm2, and a 16-ms peak flux, measured from T0-0.006 s, of 3.95(-1.40,+4.02)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The spectrum of the burst (measured from T0 to T0+0.064 s) is best fit in the 20 keV - 10 MeV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with alpha = -0.59 (-0.75,+1.34) and Ep = 599 (-222,+2249) keV (chi2 = 11/14 dof). Fitting by a GRB (Band) model yields the same alpha and Ep, and an upper limit on the high energy photon index: beta < -1.9 (chi2 = 11/13 dof) All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.