{
  "submittedHow": "web",
  "eventId": "GRB 261024A",
  "format": "text/plain",
  "circularId": 46196,
  "createdOn": 1794161535665,
  "subject": "Konus-Wind detection of GRB 261024A",
  "submitter": "Valentina Panteleeva at Ioffe Institute <panteleevav228@gmail.com>",
  "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 261024A\n(Fermi-GBM detection: The Fermi GBM team, GCN 46019;\nBALROG localization: Preis & Greiner, GCN 46020;\nNuSTAR detection: Waratkar & Grefenstette, GCN 46031;\nSVOM-GRM observation: Luo et al., GCN 46057;\nIPN triangulation: Kozyrev et al., GCN 46156)\ntriggered Konus-Wind at T0=58983.054 s UT (16:23:03.054).\n\nThe burst light curve shows a multipeaked structure\nwhich starts at ~T0-1.3 s and has a total duration of ~17.4 s.\nThe emission is seen up to ~600 keV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB261024_T58983/\n\nAs observed by Konus-Wind, the burst\nhad the total fluence of 9.59(-0.27,+0.28)x10^-6 erg/cm2,\nand the 64-ms peak flux, measured from T0+4.752 s,\nof 2.93(-0.40,+0.40)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 a power law with exponential cutoff model:\ndN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)\nwith alpha = -1.04(-0.06,+0.07)\nand Ep = 127(-5,+5) keV (chi2 = 87/86 dof).\nFitting by a GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy photon index: beta < -4.17\n(chi2 = 87/85 dof).\n\nAll the quoted errors are at the 68% confidence level.\nAll the quoted values are preliminary.",
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ]
}