{
  "bibcode": "2022GCN.32389....1L",
  "body": "S. Lesage (UAH) and C. Meegan (UAH) report on behalf of\nthe Fermi Gamma-ray Burst Monitor Team:\n\n\"At 16:11:58.54 UT on 11 July 2022, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 220711C (trigger 679248723/220711675)\nwhich was also detected by Konus-Wind (A. Ridnaia, et al. 2022, GCN 32382),\nSwift/BAT-GUANO (G. Raman et al. 2022, GCN 32384),\nand localized by IPN (D. Svinkin et al. 2022, GCN 32373).\n\nThe on-ground calculated location, using the GBM trigger data,\nis RA = 81.06, DEC = -48.16 (J2000 degrees, equivalent\nto 05h 24m, -48d 10'), with an uncertainty of 3.5 degrees\n(radius, 1-sigma containment, statistical only; there is additionally a\nsystematic error which we have characterized as a core-plus-tail model,\nwith 90% of GRBs having a 3.7 deg error and a small tail suffering a\nlarger than 10 deg systematic error. [Connaughton et al. 2015, ApJS, 216, 32] ).\n\nThe Fermi GBM on-ground location is consistent with the IPN triangulation.\n\nThe angle from the Fermi LAT boresight is 130 degrees.\n\nThe GBM light curve consists of a single emission episode with a duration (T90)\nof about 0.3 s (10-1000 keV). The time-averaged spectrum\nfrom T0-0.06 to T0+0.26 s is best fit by\na power law function with an exponential high-energy cutoff.\nThe power law index is -0.1 +/- 0.2 and the cutoff energy,\nparameterized as Epeak, is 972.6 +/- 136.0 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.51 +/- 0.08)E-06 erg/cm^2. The 64-ms peak photon flux measured\nstarting from T0+0 s in the 10-1000 keV band is 13.6 +/- 1.4 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB\nCatalog:https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM\nSupport Page:https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 32389,
  "createdOn": 1657749381000,
  "email": "sjl0014@uah.edu",
  "subject": "GRB 220711C: Fermi GBM Observation",
  "submitter": "Stephen Lesage at Fermi-GBM Team  <sjl0014@uah.edu>",
  "eventId": "GRB 220711C"
}