TITLE: GCN CIRCULAR NUMBER: 33051 SUBJECT: Konus-Wind detection of a burst from SGR 1935+2154 on 2022 December 13 DATE: 22/12/13 20:54:35 GMT FROM: Anna Ridnaia at Ioffe Institute A.Ridnaia, D. Frederiks, A.Lysenko, D. Svinkin, A. Tsvetkova, M. Ulanov, and T. Cline, on behalf of the Konus-Wind team, report: A bright burst from SGR 1935+2154 (also detected by Fermi-GBM (trigger 692607435) and GECAM (both reported in GCN Notices)) triggered Konus-Wind at T0=25026.883 s UT (06:57:06.883) on 2022 December 13. The burst light curve shows a bright pulse, which starts at ~T0-96 ms and has a total duration of ~142 ms. The emission is seen up to ~200 keV. The Konus-Wind light curve of this burst is available at http://www.ioffe.ru/LEA/SGRs/221213_T25026/ As observed by Konus-Wind, the burst had a fluence of 6.61(-0.48,+0.48)x10^-7 erg/cm2, and a 16-ms peak flux, measured from T0-0.012 s, of 1.31(-0.16,+0.16)x10^-5 erg/cm2/s (both in the 20 - 500 keV energy range). The spectrum of the burst (measured from T0 to T0+0.064 s) is best fit in the 20 - 500 keV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with alpha = 0.12(-1.06,+1.30) and Ep = 37(-8,+4) keV (chi2 = 15/11 dof). All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.