{
  "bibcode": "2024GCN.35610....1S",
  "createdOn": 1706038581437,
  "submittedHow": "web",
  "subject": "Fermi GBM Sub-Threshold Detection of GRB 240123A",
  "eventId": "GRB 240123A",
  "body": "L. Scotton (UAH) reports on behalf of the Fermi-GBM Team:\n\nSwift-BAT detected GRB 240123A at 11:05:46 UT (D'Ai et al. 2024, GCN 35602). There was no\nFermi-GBM onboard trigger around the event.\n\nAn automated, blind search for short gamma-ray bursts below the onboard\ntriggering threshold in Fermi-GBM identified no counterparts.\n\nThe GBM targeted search [1], the most sensitive, coherent search for\nGRB-like signals identified a transient most significantly on the 8.192 s\ntimescale, with a false alarm rate of 3.9e-05 Hz and a location consistent with\nthe Swift-BAT event, using the standard search protocol with a S/N of 13. \nThe GBM targeted search event was found with the highest\nsignificance with a \"normal\" spectrum (Band function with Epeak = 230 keV, alpha = -1.0, beta = -2.3) for a GRB.\n\n[1] Goldstein et al. 2019 arXiv:1903.12597",
  "submitter": "Lorenzo Scotton at UAH <lscottongcn@outlook.com>",
  "circularId": 35610
}