TITLE: GCN CIRCULAR NUMBER: 17450 SUBJECT: Konus-Wind observation of GRB 150211A DATE: 15/02/12 11:45:42 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, A.Lysenko, and T. Cline on behalf of the Konus-Wind team, report: The long-duration GRB 150211A (Swift-BAT trigger #630714: Starling et al., GCN 17434) triggered Konus-Wind at T0=42728.740 s UT (11:52:08.740). The KW light curve shows a single multi-peaked emission episode with a duration of ~13 s. The emission is visible up to ~10 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB150211_T42728/ As observed by Konus-Wind, the burst had a fluence of 2.4(-0.3,+0.3)x10^-5 erg/cm2, and a 64-ms peak flux, measured from T0+7.808 s, of 5.6(-0.7,+0.7)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum (measured from T0 to T0+16.128 s) is best fit in the 20 keV - 15 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -0.62 (-0.20,+0.25), the high energy photon index beta = -2.07 (-0.15,+0.10), the peak energy Ep = 145 (-24,+30) keV, chi2 = 114/97 dof. All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.