TITLE: GCN CIRCULAR NUMBER: 13787 SUBJECT: Konus-Wind observation of GRB 120919A DATE: 12/09/20 15:26:34 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-duration GRB 120919A (Fermi-GBM detection: Rau, GCN 13785; IPN detection and localization: Hurley et al., GCN 13786) triggered Konus-Wind at T0=26678.597s UT (07:24:38.597) The light curve shows a single pulse with a duration of ~8 s followed by a weaker and softer emission till ~T0+30 s. The emission in the main bursting episode is seen up to 7 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB120919_T26678/ As observed by Konus-Wind, the burst had a fluence of 1.4(-0.1,+0.1)x10-5 erg/cm2, and a 64-ms peak flux, measured from T0+2.432s, of 4.1(-0.5,+0.5)x10-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum (measured from T0 to T0+8.448 s) is best fit in the 20 keV - 10 MeV range by a power law with exponential cutoff model, for which alpha = -1.05 (-0.1, +0.1), and Ep = 225(-19, +23) keV, chi2 = 100.3/84 dof. All the quoted results are preliminary. All the quoted errors are at the 90% confidence level.