{
  "bibcode": "2019GCN.23939....1K",
  "body": "A. Kozlova, S. Golenetskii, R. Aptekar, D. Frederiks,\nM. Ulanov, D. Svinkin, A. Tsvetkova, A. Lysenko, and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe long-duration GRB 190305A\n(AGILE/MCAL detection: Ursi et al., GCN Circ. 23930;\nMAXI/GSC detection: Nakahira et al., GCN Circ. 23933;\nInsight-HXMT/HE detection: Xiao et al., GCN Circ. 23934;\nIPN Triangulation: Svinkin et al., GCN Circ. 23936)\ntriggered Konus-Wind at T0=47115.9 s UT (13:05:15.900).\n\nThe burst light curve shows a single pulse\nstarted at ~T0-0.1 s with a total duration of ~11 s.\nThe emission is seen up to ~10 MeV.\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 1.47(-0.04,+0.04)x10^-4 erg/cm2,\nand a 64-ms peak flux, measured from T0+1.024 s,\nof 2.00(-0.08,+0.08)x10^-4 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe time-averaged spectrum of the burst\n(measured from T0 to T0+2.560 s)\nis best fit in the 20 keV - 10 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = -0.44(-0.04,+0.05),\nthe high energy photon index beta = -2.82(-0.11,+0.10),\nthe peak energy Ep = 387(-15,+16) keV\n(chi2 = 130/74 dof).\n\nThe spectrum near the maximum count rate\n(measured from T0+0.768 to T0+1.280 s)\nis best fit in the 20 keV - 10 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = -0.15(-0.07,+0.07),\nthe high energy photon index beta = -2.96(-0.15,+0.12),\nthe peak energy Ep = 422(-20,+20) keV\n(chi2 = 87/59 dof).\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB190305_T47118/\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 23939,
  "createdOn": 1551954076000,
  "email": "ann_kozlova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 190305A",
  "submitter": "Anna Kozlova at Ioffe Institute  <ann_kozlova@mail.ioffe.ru>",
  "eventId": "GRB 190305A"
}