{
  "bibcode": "2021GCN.29482....1W",
  "body": "J. Wood (NASA/MSFC), A. von Kienlin (MPE), and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 08:43:18.66 UT on 11 February 2021, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 210211A (trigger 634725803 / 210211363)\nwhich was also detected by the Swift/BAT and Swift/XRT (E. Troja et al. 2021, GCN 29472).\nThe Fermi GBM Final Real-time Localization (GCN 29470) is consistent with the Swift position.\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 50.5 degrees.\n\nThe GBM light curve shows multiple peaks\nwith a duration (T90) of about 29 s (50-300 keV).\nThe time-averaged spectrum from T0-4 s to T0+27 s is\nbest fit by a Band function with Epeak = 95 +/- 35 keV,\nalpha = 2.8 +/- 3.1, and beta = -1.5 +/- 0.1.\n\nThe event fluence (10-1000 keV) in this time interval is\n(3.1 +/- 0.2)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+3.8 s in the 10-1000 keV band\nis 1.8 +/- 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": 29482,
  "createdOn": 1613075418000,
  "email": "joshua.r.wood@nasa.gov",
  "subject": "GRB 210211A: Fermi GBM observation",
  "submitter": "Joshua Wood at MSFC/Fermi-GBM  <joshua.r.wood@nasa.gov>",
  "eventId": "GRB 210211A"
}