{
  "bibcode": "2017GCN.20935....1T",
  "body": "A. Tsvetkova, S. Golenetskii, R.Aptekar, D. Frederiks, P. Oleynik,\nM. Ulanov, D. Svinkin, A. Lysenko, A. Kozlova and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe long-duration, intense GRB 170320A\n(IPN Triangulation: Hurley et al., GCN 20927;\nPOLAR Observation: Zhao et al., GCN 20934)\ntriggered Konus-Wind at T0=13359.957 s UT (03:42:39.957).\n\nThe burst light curve shows a multipeaked structure with a total\nduration of ~30 s.\nThe emission is seen up to ~5 MeV.\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 1.87(-0.30,+0.34)x10^-5 erg/cm2,\nand a 64-ms peak energy flux, measured from T0+0.592 s,\nof 1.01(-0.19,+0.20)x10^-5 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe time-integrated spectrum of the burst\n(measured from T0 to T0+35.072 s)\nis best fit in the 20 keV - 15 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = -1.35(-0.15,+0.21),\nthe high energy photon index beta = -2.41(-0.46,+0.22),\nthe peak energy Ep = 111(-22,+23) keV,\nchi2 = 99/97 dof.\n\nThe spectrum near the peak count rate\n(measured from T0 to T0+2.304 s)\nis best fit in the 20 keV - 15 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = -0.52(-0.17,+0.20),\nthe high energy photon index beta = -2.21(-0.18,+0.13),\nthe peak energy Ep = 178(-24,+29) keV,\nchi2 = 79/69 dof.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB170320_T13359/\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 20935,
  "createdOn": 1490267188000,
  "email": "tsvetkova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 170320A",
  "submitter": "Anastasia Tsvetkova at Ioffe Institute  <tsvetkova@mail.ioffe.ru>",
  "eventId": "GRB 170320A"
}