{
  "bibcode": "2023GCN.33349....1S",
  "body": "D. Svinkin, D. Frederiks, M. Ulanov, A. Tsvetkova,\nA. Lysenko, A. Ridnaia, and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe short-duration GRB 230217A\n(Fermi-GBM detectin: The Fermi-GBM team, GCN Circ. 33338;\nSwift-BAT detection: Moss et al., GCN Circ. 33339;\nCALET-GBM detection: Torii et al., GCN Circ. 33342;\nAGILE-MCAL detection: Casentini et al., GCN Circ. 33343)\ntriggered Konus-Wind at T0=78786.119 s UT (21:53:06.119).\n\nThe burst light curve shows a multi-peaked structure\nwhich starts at ~T0-0.2 s and has a total duration of ~0.9 s.\nThe emission is seen up to ~6 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB230217_T78786/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 2.74(-0.35,+0.39)x10^-5 erg/cm2,\nand a 16-ms peak flux, measured from T0+0.128 s,\nof 9.45(-1.84,+1.94)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+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 = -0.81(-0.13,+0.14)\nand Ep = 1367(-240,+309) keV (chi2 = 105/98 dof).\nFitting by a GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy photon index: beta <-2.7\n(chi2 = 105/97 dof).\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 33349,
  "createdOn": 1676808655000,
  "email": "svinkin@mail.ioffe.ru",
  "subject": "Konus-Wind detection of GRB 230217A",
  "submitter": "Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>",
  "eventId": "GRB 230217A"
}