Konus-Wind observation of GRB 200125A

The long GRB 200125A (Swift-BAT trigger #952164: Lien et al., GCN 26876; Markwardt et al., GCN 26897) was detected by Konus-Wind in the waiting mode. The burst light curve shows three emission pulses in the interval from ~T0(BAT)-35 s to ~T0(BAT)+315 s. The K-W light curve of this burst is available at http://www.ioffe.rssi.ru/LEA/GRBs/GRB200125A/ As observed by Konus-Wind, the burst had a fluence of 2.04(-0.16,+0.22)x10^-5 erg/cm2 and a 2.944-s peak flux, measured from ~T0(BAT)+287.4 s, of 2.80(-0.58,+0.62)x10^-7 erg/cm2/s (both in the 20 - 1500 keV energy range). The K-W 3-channel time-integrated spectrum (from ~T0(BAT)-33.5 s to ~T0(BAT)+316.8 s) is best described by simple power-law model with photon index of -2.14(-0.09,+0.1), chi2=0.08/1 dof. All the quoted errors are estimated at the 1 sigma confidence level. All the presented results are preliminary.