{
  "bibcode": "2014GCN.15811....1V",
  "body": "A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team:\n\n\"At 07:30:58.23 UT on 09 February 2014, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 140209A (trigger 413623861 / 140209313),\nwhich was also detected by the Swift/BAT (Cenko et al. 2014, GCN 15808).\nThe GBM on-ground location is consistent with the Swift position.\n\nThe trigger resulted in an Autonomous Repoint Request (ARR) that was\naccepted and the spacecraft slewed to the GBM in-flight location. The\ninitial angle from the LAT boresight was 77 deg from the Fermi/GBM\nposition.\n\nThe GBM light curve consists of a bright pulse with a small precursor\nat trigger time with a duration (T90) of about 1.4 s (50-300 keV).\nThe time-averaged spectrum from T0-0.192 s to T0+2.752 s is best fit by\na Band function with Epeak = 144 +/- 8 keV,\nalpha = -0.56 +/- 0.06, and beta = -2.33 +/- 0.07.\n\nThe event fluence (10-1000 keV) in this time interval is\n(9.5 +/- 0.2)E-06 erg/cm^2. The 0.064-sec peak photon flux measured\nstarting from T0+1.664 s in the 10-1000 keV band\nis 120.5 +/- 3.4 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 15811,
  "createdOn": 1391968691000,
  "email": "azk@mpe.mpg.de",
  "subject": "GRB 140209A: Fermi GBM observation",
  "submitter": "Andreas von Kienlin at MPE  <azk@mpe.mpg.de>",
  "eventId": "GRB 140209A"
}