{
  "bibcode": "2013GCN.14283....1X",
  "body": "Shaolin Xiong (UAH) and Vandiver Chaplin (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 20:09:41.50 UT on 10 March 2013, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 130310A (trigger 384638984 / 130310840),\nwhich was also detected by the Fermi/LAT (Guiriec et al. 2013, GCN 14282)\nThe GBM on-ground location is consistent with the LAT position.\nAt the time of triggering the angle from the Fermi LAT boresight was\n79 degrees. GBM generated a Autonomous Repointing\nRequest (ARR) due to the high peak flux of this GRB, causing\nFermi to reorient so that the LAT could better observe this GRB.\n\nThe GBM light curve consists of a precursor and a FRED pulse\nwith a duration (T90) of about 2.4 s (50-300 keV).\nThe time-averaged spectrum from T0+4.1 s to T0+5.0 s is\nadequately fit by a Band function with Epeak = 2.1 +/- 0.2 MeV,\nalpha = -1.01 +/- 0.02, and beta = -2.27 +/- 0.1.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.4 +/- 0.02)E-5 erg/cm^2. The 0.064 sec peak photon flux measured\nstarting from T0+4.1 s in the 10-1000 keV band is 170 +/- 3 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 14283,
  "createdOn": 1362991692000,
  "email": "sx0002@uah.edu",
  "subject": "GRB 130310A: Fermi GBM detection",
  "submitter": "Shaolin Xiong at UAH  <sx0002@uah.edu>",
  "eventId": "GRB 130310A"
}