TITLE: GCN CIRCULAR NUMBER: 6599 SUBJECT: Konus-Wind observation of GRB 070626 DATE: 07/07/05 16:38:28 GMT FROM: Valentin Pal'shin at Ioffe Inst S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, and T. Cline on behalf of the Konus-Wind team: We report further analysis of the bright long GRB 070626 localized by IPN (Golenetskii et al., GCN 6592). As observed by Konus-Wind the burst had a fluence of 3.91(-0.13, +0.16)x10^-4 erg/cm2, and a 64-ms peak flux measured from T0+73.216 s 1.94(-0.16, +0.20)x10^-5 erg/cm2/s (both in the 20 keV - 4 MeV energy range). The time-integrated spectrum of the burst (from T0 to T0+187.905 s: this interval comprises ~93% of the burst total counts) can be fitted (in the 20 keV - 4 MeV range) by GRBM (Band) model for which: the low-energy photon index is alpha = -1.45 (-0.03, +0.04), the high energy photon index beta = -2.28 (-0.12, +0.08), the peak energy Ep = 226 (-17, +19) keV (chi2 = 79/68 dof). The spectrum of the burst maximum (accumulated from T0+72.192 s to T0+74.752 s) is well fitted (in the 20 keV - 4 MeV range) by GRBM (Band) model for which: the low-energy photon index is alpha = -1.27 (-0.07, +0.08), the high energy photon index beta = -2.51 (-0.88, +0.27), the peak energy Ep = 355 (-62, +69) keV (chi2 = 77/69 dof). All the quoted errors are at the 90% confidence level.