{
  "bibcode": "2015GCN.18545....1V",
  "body": "Peter Veres (UAH) reports on behalf of the Fermi GBM Team:\n\n\"At 23:58:22.6 UT on 30 October 2015, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 151030A (trigger 467942306 / 151030999).\n\nThe on-ground calculated location, using the GBM trigger\ndata, is RA = 297.4, DEC = 31.1 (J2000 degrees,\nequivalent to 19 h 49 m, 31 d 08 '), with an uncertainty\nof 1 degrees (radius, 1-sigma containment,\nstatistical only; there is additionally a systematic\nerror which we have characterized as a core-plus-tail model, with 90% of\nGRBs having a 3.7 deg error and a small tail suffering a larger than 10 deg\nsystematic error. [Connaughton et al. 2015, ApJS, 216, 32] ).\n\nThe trigger resulted in an Autonomous Repoint Request (ARR)\nby the GBM Flight Software owing to the high peak flux\nof the GRB. This ARR was accepted and the spacecraft slewed to the GBM\nin-flight location. The initial angle from the Fermi LAT boresight to\nthe GBM ground location is 30 degrees.\n\nThe GBM light curve consists of two separate peaks\nwith a duration (T90) of about 117 s (50-300 keV).\nThe time-averaged spectrum from T0-5 s to T0+150 s is\nadequately fit by a Band function with Epeak = 241 +/- 11 keV,\nalpha = -1.05 +/- 0.02, and beta = -2.09 +/- 0.04.\n\nThe event fluence (10-1000 keV) in this time interval is\n(5.45 +/- 0.01)E-5 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+104 s in the 10-1000 keV band\nis 19.2 +/- 0.7 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 18545,
  "createdOn": 1446323730000,
  "email": "veresp@gmail.com",
  "subject": "GRB 151030A: Fermi GBM observation",
  "submitter": "Peter Veres at UAH  <veresp@gmail.com>",
  "eventId": "GRB 151030A"
}