TITLE: GCN CIRCULAR NUMBER: 17187 SUBJECT: Konus-Wind observation of GRB 141215A DATE: 14/12/16 17:20:54 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.Lyssenko, and T. Cline on behalf of the Konus-Wind team, report: The long-duration, intense GRB 141215A (IPN triangulation: Hurley et al., GCN 17186) triggered Konus-Wind at T0=48373.645 s UT (13:26:13.645). The light curve shows a multi-peaked structure with a total duration of ~15 s. The emission is seen up to ~10 MeV. As observed by Konus-Wind, the burst had a fluence of 2.8(-0.3,+0.3)x10^-5 erg/cm2, and a 64-ms peak flux, measured from T0+10.560 s, of 7.7(-0.8,+0.8)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum (measured from T0 to T0+13.824 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 = -0.29 (-0.14,+0.14), the high energy photon index beta = -2.80 (-0.69,+0.25), the peak energy Ep = 241 (-17,+28) keV, chi2 = 102/97 dof. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB141215_T48373/ All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.