{
  "bibcode": "2017GCN.22233....1P",
  "body": "S. Poolakkil (UAH), C. Meegan (UAH) and A. von Kienlin (MPE) report on\nbehalf of the Fermi GBM Team:\n\n\"At 11:49:15.26 UT on 10 December 2017, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 171210A (trigger 534599360 / 171210493)\nwhich was also detected by the Fermi LAT (E. Bissaldi et al. 2017, GCN\n22228). The GBM on-ground\nlocation is consistent with the LAT position.\n\nThe trigger resulted in an Autonomous Repoint Request (ARR)\nby the GBM Flight Software owing to the high peak flux of the GRB.\nThis ARR was accepted and the spacecraft slewed to the GBM in-flight\nlocation. The initial angle from the Fermi LAT boresight to\nthe best location is 51 degrees.\n\nThe GBM light curve consists of a single bright peak\nwith a duration (T90) of about 143 s (50-300 keV).\nThe time-averaged spectrum from T0-1.02 s to T0+103.42 s is\nbest fit by a Band function with Epeak= 145 +/- 3 keV, alpha = -0.65 +/-\n0.02\nand beta = -2.34 +/- 0.05.\n\nThe event fluence (10-1000 keV) in this time interval is\n(7.33 +/- 0.08)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+6.46 s in the 10-1000 keV band\nis 16.7 +/- 0.36 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 22233,
  "createdOn": 1512965532000,
  "email": "sp0076@uah.edu",
  "subject": "GRB 171210A: Fermi GBM detection",
  "submitter": "Suraj Poolakkil at UAH  <sp0076@uah.edu>",
  "eventId": "GRB 171210A"
}