{
  "circularId": 35079,
  "createdOn": 1700230913566,
  "submittedHow": "email-legacy",
  "bibcode": "2023GCN.35079....1S",
  "body": "D. Svinkin, D. Frederiks, A. Lysenko, A. Ridnaia,\nYu. Temiraev, A. Tsvetkova, M. Ulanov, and T. Cline,\non behalf of the Konus-Wind team, report:\n\nThe bright, short-duration GRB 231117A\n(Swift-BAT detection: Laha et al., GCN Circ. 35071;\nAstroSat-CZTI detection: Navaneeth et al., GCN Circ. 35072;\nAGILE-MCAL detection: Cattaneo et al., GCN Circ. 35075)\ntriggered Konus-Wind at T0=10998.926 s UT (03:03:18.926).\n\nThe burst light curve shows a single pulse\nwhich starts at ~T0 and has a total duration of ~0.7 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/GRB231117_T10998/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 9.10(-0.94,+0.97)x10^-6 erg/cm2,\nand a 16-ms peak flux, measured from T0+0.052 s,\nof 5.88(-1.01,+1.03)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+0.256 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 = -1.15(-0.11,+0.13),\nthe high energy photon index beta = -2.81(-7.19,+0.43),\nthe peak energy Ep = 400(-82,+89) keV\n(chi2 = 45/51 dof).\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.\n\n",
  "subject": "Konus-Wind detection of GRB 231117A (short/hard)",
  "submitter": "Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>",
  "eventId": "GRB 231117A"
}