{
  "bibcode": "2022GCN.32206....1R",
  "body": "A.Ridnaia, D. Frederiks, A.Lysenko, D. Svinkin,\nA. Tsvetkova,  M. Ulanov, and T. Cline,\non behalf of the Konus-Wind team, report:\n\nThe long-duration GRB 220613A\n(IPN triangulation: Kozyrev et al., GCN Circ. 32205)\ntriggered Konus-Wind at T0=73416.994 s UT (20:23:36.994).\n\nThe burst light curve contains two major emission episodes.\nThe first one, lasting from ~T0-6 s to ~T0+15 s, and\nthe second episode, from ~T0+89 s to ~T0+133 s.\nThe total burst duration was ~173 s.\nThe emission is seen up to ~10 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB220613_T73416/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 2.61(-0.35,+0.34)x10^-4 erg/cm2,\nand a 64-ms peak flux, measured from T0+6.288 s,\nof 3.06(-0.48,+0.48)x10^-5 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+170.496 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 = -0.99(-0.12,+0.14),\nthe high energy photon index beta = -1.88(-0.30,+0.15),\nthe peak energy Ep = 719(-199,+323) keV\n(chi2 = 109/86 dof).\n\nThe spectrum near the maximum count rate\n(measured from T0+5.888 to T0+7.680 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 = -0.78(-0.08,+0.09),\nthe high energy photon index beta = -2.32(-0.43,+0.23),\nthe peak energy Ep = 1106(-187,+221) keV\n(chi2 = 73/71 dof).\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 32206,
  "createdOn": 1655481495000,
  "email": "ridnaia@mail.ioffe.ru",
  "subject": "Konus-Wind detection of GRB 220613A",
  "submitter": "Anna Ridnaia at Ioffe Institute  <ridnaia@mail.ioffe.ru>",
  "eventId": "GRB 220613A"
}