{
  "bibcode": "2014GCN.15651....1V",
  "body": "A. von Kienlin (MPE) and P. N. Bhat (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 06:39:24.48 UT on 29 December 2013, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 131229A (trigger 409991967 / 20131229277),\nwhich was also detected by the Swift/BAT\n(Page et al. 2013, GCN 15627 and Konus-Wind Golenetskii et al. 2013, GCN 15639).\nThe GBM on-ground location is consistent with the Swift/XRT position (Evans et al. 2013, GCN 15631) .\n\nThe angle from the Fermi LAT boresight is 84 degrees.\n\nThe GBM light curve consists of multiple peaks\nwith a duration (T90) of about 13 s (50-300 keV).\nThe time-averaged spectrum from T0+0.002 s to T0+16.096 s is\nadequately fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -0.71 +/- 0.02 and\nthe cutoff energy, parameterized as Epeak, is 382.0 +/- 11.6 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(2.64 +/- 0.05)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+13.216 s in the 10-1000 keV band\nis 24.0+/-0.4 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 15651,
  "createdOn": 1388695844000,
  "email": "Narayana.Bhat@nasa.gov",
  "subject": "GRB 131229A: Fermi GBM detection",
  "submitter": "Narayana Bhat at U Alabama/Huntsville/GBM  <Narayana.Bhat@nasa.gov>",
  "eventId": "GRB 131229A"
}