{
  "bibcode": "2022GCN.31702....1W",
  "body": "J. Wood (NASA/MSFC) reports on behalf of the Fermi GBM Team:\n\n\"At 18:15:36.24 UT on 06 March 2022, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 220306B (trigger 668283341 / 220306761)\nwhich was also detected by the Swift/BAT and Swift/XRT (Caputo et al. 2022, GCN 31697).\nThe GBM on-ground location is consistent with the Swift position.\n\nThe GBM light curve consists of a single pulse\nwith a duration (T90) of about 10.2 s (50-300 keV).\nThe time-averaged spectrum from T0-1.0 s to T0+9.2 s is\nbest fit by a Band function with Epeak = 160 +/- 122 keV,\nalpha = -1.1 +/- 0.3, and beta = -1.8 +/- 0.2\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.7 +/- 0.2)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+1.2 s in the 10-1000 keV band\nis 2.8 +/- 0.2 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 31702,
  "createdOn": 1646616035000,
  "email": "joshua.r.wood@nasa.gov",
  "subject": "GRB 220306B: Fermi GBM observation",
  "submitter": "Joshua Wood at MSFC/Fermi-GBM  <joshua.r.wood@nasa.gov>",
  "eventId": "GRB 220306B"
}