{
  "bibcode": "2021GCN.29728....1F",
  "body": "D. Frederiks, S. Golenetskii, A.Lysenko, A. Ridnaia,\nD. Svinkin, A. Tsvetkova,  M. Ulanov, and T. Cline,\non behalf of the Konus-Wind team, report:\n\nThe long GRB 210324C (IPN triangulation:  Hurley et al., GCN 29727)\ntriggered Konus-Wind (KW) at T0=72000.034 s UT (20:00:00.034).\n\nThe burst light curve shows a multi-peaked structure with the total \nduration of ~75 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/GRB210324_T72000/\n\nAs observed by Konus-Wind, the burst had\na fluence of (7.0 �� 0.6)x10^-5 erg/cm^2 and\na 64-ms peak energy flux, measured from T0+34.112,\nof (3.4 �� 0.4)x10^-6 erg/cm^2/s (both in the 20 keV - 10 MeV energy range).\n\nThe time-integrated spectrum (measured from T0 to T0+65.024 s)\nis best fit in the 20 keV - 20 MeV range\nby the GRB (Band) function with the following model parameters:\nthe low-energy photon index alpha = -0.51 (-0.10,+0.11),\nthe high energy photon index beta = -2.69 (-0.28,+0.18),\nthe peak energy Ep = 190 (-11,+12) keV,\nchi2 = 97/97 dof.\n\nThe spectrum near the peak count rate (measured from T0+33.024\nto T0+40.448 s) is best fit in the 20 keV - 20 MeV range\nby the GRB (Band) function with the following model parameters:\nthe low-energy photon index alpha = -0.56 (-0.15,+0.17),\nthe high energy photon index beta = -2.64 (-0.53,+0.24),\nthe peak energy Ep = 211 (-21,+26) keV,\nchi2 = 108/97 dof.\n\nAll the quoted errors are estimated at the 90% confidence level.\nAll the presented results are preliminary.",
  "circularId": 29728,
  "createdOn": 1616697778000,
  "email": "fred@mail.ioffe.ru",
  "subject": "Konus-Wind detection of GRB 210324C",
  "submitter": "Dmitry Frederiks at Ioffe Institute  <fred@mail.ioffe.ru>",
  "eventId": "GRB 210324C"
}