{
  "bibcode": "2021GCN.30421....1F",
  "body": "C. Fletcher (USRA) reports on behalf of the Fermi-GBM Team:\n\nSwift-BAT detected GRB 210708A at 02:25:37 UT (GCN 30413). 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 4.096 s\ntimescale, with a false alarm rate of 1.7e-04 Hz and a location consistent with\nthe Swift-BAT event, using the standard search protocol with a S/N of 6.\nThe GBM targeted search event was found with the highest\nsignificance with a \"soft\" spectrum (Band function with\nEpeak = 70 keV, alpha = -1.9, beta = -3.7) for a GRB.\n\n[1] Goldstein et al. 2019 arXiv:1903.12597",
  "circularId": 30421,
  "createdOn": 1625763138000,
  "email": "cfletcher@usra.edu",
  "subject": "Fermi GBM Sub-Threshold Detection of GRB 210708A",
  "submitter": "Cori Fletcher at USRA  <cfletcher@usra.edu>",
  "eventId": "GRB 210708A"
}