TITLE: GCN CIRCULAR NUMBER: 12093 SUBJECT: Konus-Wind observation of GRB 110625A DATE: 11/06/26 13:56:21 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report: The long bright GRB 110625A (Swift-BAT trigger #456073: Page et al., GCN 12088; Palmer et al., GCN 12091) triggered Konus-Wind at T0=76105.088s UT (21:08:25.088) The burst light curve consists of several multi-peaked pulses, a total duration of the burst is ~60 s. The emission is seen up to ~8 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB110625_T76105/ As observed by Konus-Wind the burst had a fluence of (6.1 ± 0.6)x10-5 erg/cm2, and a 64-ms peak flux, measured from T0+20.992 s, of (1.5 ± 0.2)x10-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum of the burst (from T0 to T0+58.880 s) is best fitted in the 20 keV - 10 MeV range by the GRB (Band) model, for which: the low-energy photon index alpha = -1.05 (-0.08, +0.08), the high energy photon index beta = -2.7 (-0.5, +0.2), the peak energy Ep = 190(-14, +17) keV, chi2 = 79.7/87 dof. The spectrum at the maximum count rate (measured from T0+20.992 to T0+21.504 s) is best fitted in the 20 keV - 10 MeV range by the GRB (Band) model, for which: the low-energy photon index alpha = -0.8 (-0.2, +0.2), the high energy photon index beta = -2.5 (-0.5, +0.2), the peak energy Ep = 168(-24, +40) keV, chi2 = 45.2/46 dof. All the quoted results are preliminary. All the quoted errors are at the 90% confidence level.