{
  "bibcode": "2010GCN.10723....1C",
  "body": "V.Chaplin (UAH) reports on behalf of the Fermi GBM Team:\n\n\"At 19:20:55.53 UT on 04 May 2010, the Fermi Gamma-ray Burst Monitor  \n(GBM)\ntriggered on GRB 100504A (trigger 294693657 / 100504.806), which\nwas also seen by Swift,BAT (J.Mao et al., GCN 10712).  The calculated\nGBM ground position is consistent with the Swift,BAT position.\nThe angle from the Fermi LAT boresight is 104 degrees.\n\nThe GBM light curve shows a single pulse with a duration (T90)\nof about 16 s (50-300 keV). The time-averaged spectrum from T0-6.1 to  \nT0+23.6 s\nis best fit by a power-law with an exponential high-energy cutoff.\nThe power-law index is -0.82 (+0.17/-0.16), and the cutoff energy,\nparameterized as Epeak, is 85.7 (8.0/-6.6) keV (C-stat 960.7 for 481  \nDOF).\nThe fluence (10-1000 keV) in this time interval is (2.7 +/- 0.12)E-06  \nerg/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 10723,
  "createdOn": 1273165853000,
  "email": "chapliv@email.uah.edu",
  "subject": "GRB 100504A: Fermi GBM observation",
  "submitter": "Vandiver Chaplin at UAH/Fermi-GBM  <chapliv@email.uah.edu>",
  "eventId": "GRB 100504A"
}