{
  "bibcode": "2009GCN.10223....1T",
  "body": "D. Tierney (UCD) and S. McBreen (UCD/MPE)\nreport on behalf of the Fermi GBM Team:\n\n\"At 07:59:24.76 UT on 26 November 2009, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 091126 (trigger 280915166 / 091126333).\nThe on-ground calculated location, using the GBM trigger\ndata, is RA = 83.3, DEC = -19.3 (J2000 degrees,\nequivalent to 05 h 33 m, -19 d 18 '), with an uncertainty\nof 5.4 degrees (radius, 1-sigma containment,\nstatistical only; there is additionally a systematic\nerror which is currently estimated to be 2 to 3 degrees).\nThe angle from the Fermi LAT boresight is 93 degrees.\nThis burst was also independently detected by INTEGRAL SPI-ACS.\n\nThe GBM light curve consists of one pulse\nwith a duration of about 0.3 s (8-1000 keV).\nThe time-averaged spectrum from T0-0.256 s to T0+0.256 s is\nadequately a power law function with an exponential\nhigh energy cutoff.  The power law index is -0.60 (+0.24/-0.21) and\nthe cutoff energy, parameterized as Epeak, is 458 (+215/-107) keV\n(CSTAT  478 for 476 d.o.f.).\n\nThe event fluence (8-1000 keV) in this time interval is\n(5.9 +/- 0.5)E-7 erg/cm^2. The 0.128 sec peak photon flux measured\nstarting from T0+0 s in the 8-1000 keV band\nis 8.3 +/- 0.7 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 10223,
  "createdOn": 1259662701000,
  "email": "smcbreen@mpe.mpg.de",
  "subject": "GRB 091126: Fermi GBM detection",
  "submitter": "Sheila McBreen at MPE  <smcbreen@mpe.mpg.de>",
  "eventId": "GRB 091126"
}