{
  "bibcode": "2011GCN.11591....1L",
  "body": "Lin Lin (UAH)\nreports on behalf of the Fermi GBM Team: \n\n\"At 15:59:39.23 UT on 20 January 2011, the Fermi Gamma-Ray Burst\n Monitor triggered and located GRB 110120A (trigger 317231981 / \n110120666).\n\nThe on-ground calculated location, using the GBM trigger \ndata, is RA = 64.54, DEC = -17.06 (J2000 degrees, \nequivalent to 04 h 18 m 09.6 s, -17 d 03 ' 36.0 \"), with an \nuncertainty of 1.08 degrees (radius, 1-sigma containment, \nstatistical only; there is additionally a systematic\nerror which is currently estimated to be 2 to 3 degrees).\n \nThe angle from the Fermi LAT boresight is 15 degrees.\n\nThis burst triggered the Fermi spacecraft slew because of high\n peak flux. \n\nThe GBM light curve shows a ~5 s peak followed by a ~40 s \ntail with a duration (T90) of about 27 s (50-300 keV). \nThe time-averaged spectrum from T0+0.003 s to T0+43.393 s is \nacceptably fit by a power law function with an exponential\nhigh-energy cutoff.  The power law index is -0.87 +/- 0.04 and\nthe cutoff energy, parameterized as Epeak, is 1156 +/- 172 keV\n(C-Stat 666.26 for 487 d.o.f.).\n\nThe event fluence (10-1000 keV) in this time interval is \n(2.55 +/- 0.05)E-5 erg/cm^2. The 64 ms peak photon flux measured \nstarting from T0+0.384 s in the 10-1000 keV band \nis 15.03 +/- 1.35 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": 11591,
  "createdOn": 1295627002000,
  "email": "ll0005@uah.edu",
  "subject": "GRB 110120A: Fermi GBM detection",
  "submitter": "Lin Lin at UAH/NAOC  <ll0005@uah.edu>",
  "eventId": "GRB 110120A"
}