{
  "submitter": "Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>",
  "bibcode": "2026GCN.44286....1R",
  "eventId": "GRB 260410A",
  "format": "text/plain",
  "body": "A. Ridnaia, D. Frederiks, A. Lysenko, D. Svinkin,\nA. Tsvetkova,  M. Ulanov, and T. Cline,\non behalf of the Konus-Wind team, report:\n\nThe short-duration GRB 260410A\n(Fermi-GBM detection: Fermi GBM team, GCN Circ. 44252,\nHamburg et al., GCN Circ. 44258;\nFermi-LAT detection: Holzmann Airasca et al., GCN Circ. 44253;\nCALET-GBM detection: Ricciarini et al., GCN Circ. 44283)\ntriggered Konus-Wind at T0=25436.09 s UT (07:03:56.090).\n\nThe burst light curve shows a multipeaked structure,\nwhich starts at ~T0-0.1 s and has a total duration of ~0.3 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/GRB260410_T25436/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 3.36(-0.54,+0.53)x10^-6 erg/cm2,\nand a 16-ms peak flux, measured from T0+0.054 s,\nof 2.53(-0.69,+0.68)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+0.192 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(-0.34,+0.62),\nthe high energy photon index beta = -2.06(-0.51,+0.28),\nthe peak energy Ep = 784(-283,+341) keV\n(chi2 = 21/27 dof).\n\nAll the quoted errors are at the 68% confidence level.\nAll the quoted values are preliminary.\n",
  "subject": "Konus-Wind detection of GRB 260410A (short/hard)",
  "createdOn": 1776081138343,
  "circularId": 44286,
  "submittedHow": "web"
}