{
  "bibcode": "2010GCN.10330....1B",
  "body": "M. S. Briggs and V. Connaughton (UA Huntsville),\nreport on behalf of the Fermi GBM Team:\n\n\"At 21:31:00.24 UT on 16 January 2010, the Fermi Gamma-ray Burst Monitor\n(GBM) triggered and located GRB 100116A (trigger 285370262 / 100116.897).\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 301.48, Dec = +16.24 (J2000 degrees, equivalent to\nJ2000 20h 06m, +16d 14'), with a statistical uncertainty of 1.0 degrees\n(radius, 1-sigma containment, statistical only; there is additionally\na systematic error which is currently estimated to be 2 to 3 degrees).\nThe angle from the Fermi LAT boresight is 29 degrees.\n\nThe GBM light curve shows two peaks separated by over 60 seconds with\nlittle or no intervening emission.  The total duration is approximately\n110 seconds.  Both peaks are best fit with a power law function with an\nexponential high-energy cutoff.   The first peak, fit from -3.072 to\n2.048 s, has Epeak = 240 (-40,+60) keV and an index of -0.92 +/- 0.15.\nThe fluence of this peak is (1.5 +/- 0.1) E-6 ergs / cm**2.  The second\npeak, fit from 82.949 to 101.38 s, has Epeak = 1240 +/- 90  keV and an\nindex of -1.02 +/- 0.017.   The fluence of this peak is\n(3.36 +/- 0.03) E-5 ergs / cm**2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 10330,
  "createdOn": 1263695389000,
  "email": "michael.briggs@nasa.gov",
  "subject": "GRB 100116A: Fermi GBM detection",
  "submitter": "Michael S. Briggs at UAH and MSFC  <michael.briggs@nasa.gov>",
  "eventId": "GRB 100116A"
}