TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3619 SUBJECT: Konus-Wind observation of GRB 050713A DATE: 05/07/15 16:34:07 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 report: The long GRB 050713A (Swift-BAT trigger #145675; Falcone et al., GCN 3581, Palmer et al., GCN 3597) triggered Konus-Wind at T0=16141.745 s UT (04:29:01.745). As observed by Konus-Wind it had a duration of ~16 s, fluence (1.22 ± 0.08)10-5 erg/cm2, peak flux on 64-ms time scale (1.7 ± 0.4)10-6 erg/cm2 s (both in the 20 keV - 4 MeV energy range). Konus-Wind did not detect additional smaller peaks, reported by Swift-BAT. Probably they were too weak to be detected by Konus-Wind. The spectrum integrated over the most instense part of the GRB (from T0 to T0+8.448 s) is well fitted (in 20 keV-4 MeV range) by a power law with exponential cutoff model: dN/dE ~ E^(-alpha) exp(-E/E0) with alpha = 1.12 +/- 0.08, and E0 = 355 ± 70 keV. The peak energy Ep = 312 ± 50 keV. -- Valentin Pal'shin Ioffe Physico-Technical Institute Laboratory for Experimental Astrophysics 26 Polytekhnicheskaya, St Petersburg 194021, Russian Federation email: val@mail.ioffe.ru Tel: (7)-812-2479177 Fax: (7)-812-2471963