TITLE: GCN CIRCULAR NUMBER: 14338 SUBJECT: Konus-Wind observation of GRB 130325A DATE: 13/03/27 11:00:30 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 GRB 130325A (Fermi-GBM detection: Tierney, GCN 14329; Fermi-LAT detection: Vianello et al., GCN 14332) triggered Konus-Wind at T0=17516.880s UT (04:51:56.880) The light curve shows a single pulse with a total duration of ~8 s. The emission is seen up to 6 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB130325_T17516/ As observed by Konus-Wind, the burst had a fluence of (8.1 ± 1.4)x10-6 erg/cm2, and a 64-ms peak flux, measured from T0+0.704s, of (3.7 ± 0.4)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 the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -0.90 ± 0.18, the high energy photon index beta = -2.4 ± 0.3, the peak energy Ep = 186 ± 28 keV, chi2 = 59.8/78 dof. All the quoted results are preliminary.