{
  "body": "D. Svinkin, D. Frederiks, A. Lysenko, A. Ridnaia, \nA. Tsvetkova, M. Ulanov, and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe short-duration GRB 250217C\n(Fermi-GBM detection: The Fermi GBM team, GCN 39357;\nSmith, GCN 39367;\nAstroSat-CZTI detection: Tembhurnikar et al., GCN 39359;\nIPN triangulation: Kozyrev et al., GCN 39365;\nSVOM-GRM detection: Wang et al., GCN 39369)\ntriggered Konus-Wind at T0=86086.280 s UT (23:54:46.280).\n\nThe burst light curve shows a multipeaked structure\nwhich starts at ~T0 and has a total duration of ~0.3 s.\nThe emission is seen up to ~4 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB250217_T86086/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 2.76(-0.35,+0.38)x10^-6 erg/cm2,\nand a 16-ms peak flux, measured from T0+0.190 s,\nof 2.38(-0.47,+0.49)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 - 4 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = -0.27(-0.49,+0.70),\nthe high energy photon index beta = -1.93(-0.11,+0.09),\nthe peak energy Ep = 116(-26,+40) keV\n(chi2 = 47/37 dof).\n\nAll the quoted errors are at the 68% confidence level.\nAll the quoted values are preliminary.",
  "createdOn": 1740061080635,
  "eventId": "GRB 250217C",
  "subject": "Konus-Wind detection of GRB 250217C (short)",
  "submittedHow": "web",
  "circularId": 39386,
  "format": "text/plain",
  "bibcode": "2025GCN.39386....1S",
  "submitter": "Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>"
}