{
  "bibcode": "2009GCN..9050....1G",
  "body": "S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, P.\nOleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind\nteam, report:\n\nThe long bright GRB 090328 (Fermi-GBM trigger trigger 259925808 / \nGRB090328401) localized by Fermi-LAT (McEnery et al., GCN 9044; the LAT \nlocalization was confirmed by the IPN triangulation: Golenetskii et al., \nGCN 9049) triggered Konus-Wind at T0=34609.486 s UT (09:36:49.486).\n\nThe burst light curve shows a multipeaked structure with a duration of\n~80 s. There is a hint of an extended soft emission.\n\nAs observed by Konus-Wind the burst\nhad a fluence of 9.25(-1.98, +1.63)x10^-5 erg/cm2,\nand a 64-ms peak flux measured from T0+20.064 s\nof 1.22(-0.26, +0.25)x10^-5 erg/cm2/s\n(both in the 20 keV - 8 MeV energy range).\n\nThe time-integrated spectrum of the burst\n(from T0 to T0+72.960 s) is well fitted (in the 20 keV - 8 MeV\nrange) by GRB (Band) model for which:\nthe low-energy photon index alpha = -1.04(-0.10, +0.11),\nthe high energy photon index beta = -2.05(-0.90, +0.22),\nthe peak energy Ep = 592(-141, +237) keV (chi2 = 78.4/81 dof).\n\n\nThe spectrum of the most intense part\n(from T0 to T0+23.808 s) is well fitted (in the 20 keV - 8 MeV\nrange) by GRB (Band) model for which:\nthe low-energy photon index alpha = -0.94 +/- 0.08,\nthe high energy photon index beta = -2.07(-0.36, +0.16),\nthe peak energy Ep = 600(-100, +147) keV (chi2 = 81.1/81 dof).\nThe fluence of this part is 7.48(-0.93, +0.83)x10^-5 erg/cm2 (in the 20 \nkeV - 8 MeV energy range).\n\nAll the quoted errors are at the 90% confidence level.\n\nThe Konus-Wind light curve of this GRB is available\nat http://www.ioffe.ru/LEA/GRBs/GRB090328_T34609/",
  "circularId": 9050,
  "createdOn": 1238350698000,
  "email": "val@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 090328",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 090328"
}