{
  "bibcode": "2018GCN.22334....1V",
  "body": "P. Veres (UAH), C. Meegan (UAH) and A. von Kienlin (MPE)\nreport on behalf of the Fermi GBM Team:\n\n\"At 10:02:05.41 UT on 13 January 2008, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 180113C (trigger 537530530 / 180113418).\n\nThe on-ground calculated location, using the GBM trigger\ndata, is RA = 174.6, DEC = -64.7 (J2000 degrees,\nequivalent to 11 h 39 m, -64 d 44 '), with an uncertainty\nof 1 degree (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 in-flight\nlocation. The initial angle from the Fermi LAT boresight to\nthe GBM ground location is 63 degrees.\n\nThe GBM light curve shows multiple overlapping pulses\nwith a duration (T90) of about 24.6 s (50-300 keV).\nThe time-averaged spectrum from T0+3.1 s to T0+34.8 s is\nbest fit by a Band function with Epeak = 307 +/- 4 keV,\nalpha = -0.68 +/- 0.01, and beta = -2.09 +/- 0.01.\n\nThe event fluence (10-1000 keV) in this time interval is\n(6.838 +/- 0.017)E-5 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+10. s in the 10-1000 keV band\nis 26.3 +/- 0.3 ph/s/cm^2.\n\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 22334,
  "createdOn": 1515938966000,
  "email": "veresp@gmail.com",
  "subject": "GRB 180113C: Fermi GBM detection",
  "submitter": "Peter Veres at UAH  <veresp@gmail.com>",
  "eventId": "GRB 180113C"
}