{
  "bibcode": "2022GCN.33030....1M",
  "body": "C. Malacaria (ISSI) and C. Meegan (UAH) report on behalf of the Fermi \nGBM Team: \"At 12:22:47.36 UT on 06 December 2022, the Fermi Gamma-Ray \nBurst Monitor (GBM) triggered and located GRB 221206B (trigger 692022172 \n/ 221206516). The GBM Final Real-time Localization was reported in GCN \n33023. The event was also detected by the Swift/BAT-GUANO (DeLaunay et \nal. 2022, GCN 33027) at a consistent position. The angle from the Fermi \nLAT boresight at the GBM trigger time is 121 degrees. The GBM light \ncurve consists of two main peaks with a duration (T90) of about 8 s \n(50-300 keV). The time-averaged spectrum from T0-0 s to T0+5.9 s is best \nfit by a Band function with Epeak = 151 +/- 6 keV, alpha = -0.36 +/- \n0.06, and beta = -3.1 +/- 0.2 The event fluence (10-1000 keV) in this \ntime interval is (2.19 +/- 0.05)E-06 erg/cm^2. The 1-sec peak photon \nflux measured starting from T0+7.5 s in the 10-1000 keV band is 26.7 +/- \n0.7 ph/s/cm^2. The spectral analysis results presented above are \npreliminary; final results will be published in the GBM GRB Catalog: \nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html \n<https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html> For Fermi \nGBM data and info, please visit the official Fermi GBM Support Page: \nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/ \n<https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/>\"",
  "circularId": 33030,
  "createdOn": 1670495043000,
  "email": "cmalacaria.astro@gmail.com",
  "subject": "GRB 221206B: Fermi GBM observation",
  "submitter": "Christian Malacaria at ISSI  <cmalacaria.astro@gmail.com>",
  "eventId": "GRB 221206B"
}