{
  "eventId": "GRB 260708A",
  "submittedHow": "email",
  "createdOn": 1786006041008,
  "body": "From Andrey Bogomolov at Moscow State University <aabboogg@srd.sinp.msu.ru>\n\nA. Bogomolov, V. Bogomolov, A. Iyudin, S. Svertilov, N. Vasiliev\non behalf of the MSU “Sozvezdie-270” team, report:\n\nAt 2026-07-08 ~10:11:16 UT the long-duration GRB 260708A (Fermi/GBM detection: GCN #45115, Fermi/LAT detection: GCN #45117, GCN #45145, IceCube observation: GCN #45120, GCN #45134, GCN #45171,  GECAM-B detection: GCN #45126, Glowbug detection: GCN #45130) was detected by the DeCoR-1 and DeCoR-3 instruments on the cubesat Avion of the Moscow University project “Sozvezdie-270” [1].\n\nTotal amount of photons detected by Avion is 403 (energy band >40 keV), it corresponds to a fluence of ~1.8*10^(-6) erg/cm^2 in the range 40-500 keV.\n\nLC in the energy range of 40-500 keV is a single episode, a maximum flux is ~2.6 phot/(cm^2*s) at ~10 s after the start of the burst.\n\nА total duration (T90) of the burst is ~25 s.\n\nThe light curve obtained by Avion is available here:\nhttps://swx.sinp.msu.ru/models/grb_cat/data/pictures/GRB260708A_LC_Avion.png\n\nParameters of GRB 260708A as well as other GRBs detected by Moscow University cubesats are listed at: https://swx.sinp.msu.ru/models/grb_cat/grb.php?lang=en\n\nAvion is one of 5 cubesats of the Moscow University project “Sozvezdie-270” [1] launched on 2023 June 27. The payload of Avion is a set of scintillation gamma-ray detectors DeCoR [2], the energy range is  >30 keV, the time resolution is 0.5s.\n\n[1] Svertilov et al. 2023  https://link.springer.com/chapter/10.1007/978-3-031-50248-4_21\n[2] Bogomolov et al. 2026 Cosmic Research 64, 262 https://link.springer.com/article/10.1134/S0010952526600071\n",
  "submitter": "Andrey Bogomolov at Moscow State University <aabboogg@srd.sinp.msu.ru>",
  "bibcode": "2026GCN.45296....1B",
  "circularId": 45296,
  "subject": "GRB 260708A: cubesat Avion detection"
}