{
  "format": "text/plain",
  "circularId": 44463,
  "body": "V. Panteleeva, D. Frederiks, A. Lysenko, A. Ridnaia, D. Svinkin,\nA. Tsvetkova,  M. Ulanov, and T. Cline,\non behalf of the Konus-Wind team, report:\n\nThe long-duration GRB 260415C\ntriggered Konus-Wind at T0=27659.163 s UT (07:40:59.163).\n\nThe burst light curve shows a single pulse\nwhich starts at ~T0-2.5 s and has a total duration of ~11.3 s.\nThe emission is seen up to 2 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB260415_T27659/\n\nAs observed by Konus-Wind, the burst\nhad the total fluence of 3.64(-0.42,+0.54)x10^-6 erg/cm2,\nand the 64-ms peak flux, measured from T0-0.446 s,\nof 1.56(-0.41,+0.45)x10^-6 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+8.448 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 = -0.06(-0.45,+0.60),\nthe high energy photon index beta = -2.91(-0.94,+0.36),\nthe peak energy Ep = 105(-11,+12) keV\n(chi2 = 92/77 dof).\n\nAll the quoted errors are at the 68% confidence level.\nAll the quoted values are preliminary.",
  "eventId": "GRB 260415C",
  "submitter": "Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>",
  "createdOn": 1777925898369,
  "submittedHow": "web",
  "subject": "Konus-Wind detection of GRB 260415C"
}