{
  "bibcode": "2009GCN..8784....1K",
  "body": "Chryssa Kouveliotou (NASA/MSFC), Valerie Connaughton (UAHuntsville) report on behalf of the Fermi GBM Team: \n\n\"At 06:09:21.34 UT on 25 December 2008, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 081225 (trigger 251878162/081225256).\n\nThe on-ground calculated location, using the GBM trigger data, is RA = 234.1, DEC = -64.6 (J2000 degrees, equivalent to 15 h 36.5 m, -64 d 36 '), with an uncertainty of 6.9 degrees (radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees).\n \nThe angle from the Fermi LAT boresight is 55 degrees.\n\nThe GBM light curve consists of a single pulse with a duration (T90) of about 42 s (50-300 keV).  The time-averaged spectrum from T0-18.43 s to T0+18.43 s is best fit by a simple power law function with index -1.51+/- 0.04 (chi squared 233 for 220 d.o.f.).\n\nThe event fluence (50-300 keV) in this time interval is (2.45 +/- 0.06)E-6 erg/cm^2. The 6.14-sec peak photon flux measured starting from T0-6.144 s in the 50-300 keV band is 0.60 +/- 0.02 ph/s/cm^2.\n\nThe spectral and timing analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog.\"",
  "circularId": 8784,
  "createdOn": 1231346778000,
  "email": "chryssa.kouveliotou@nasa.gov",
  "subject": "Fermi/GBM detection of GRB 081225",
  "submitter": "Chryssa Kouveliotou at MSFC  <chryssa.kouveliotou@nasa.gov>",
  "eventId": "GRB 081225"
}