{
  "bibcode": "2009GCN..8897....1G",
  "body": "S. Guiriec (UAH) reports on behalf of the Fermi GBM Team:\n\n\"At 21:07:15.42 UT on 29 January 2009, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 090129 (trigger 254956037 / 090129880) which was\nalso detected by the SWIFT-BAT.\nThe GBM on-ground location is consistent with the Swift position.\n\nThe angle from the Fermi LAT boresight is 22 degrees.\n\nThe GBM light curve consists of a single peak with a FRED shape starting at\n~T0-0.3s with a duration (T90) of about 17.2s (8-1000 keV).\nThe time-averaged spectrum from T0-0.3s to T0+15.1s is well fitted by a\nBand function with Epeak = 123.2 +/- 44.8 keV, alpha = -1.39 +/- 0.13,\nand beta = -1.98 +/- 0.14 (chi squared 373 for 374 d.o.f.).\n\nThe event fluence (8-1000 keV) in this time interval is\n(5.6 +/- 0.7)E-06 erg/cm^2.\nThe 1-sec peak photon flux measured starting from T0+0.8 s in the\n8-1000 keV band is 8.0 +/- 0.1 ph/s/cm^2.\n\nThe spectral and temporal analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 8897,
  "createdOn": 1234199857000,
  "email": "sylvain.guiriec@lpta.in2p3.fr",
  "subject": "GRB 090129: Fermi GBM detection",
  "submitter": "Sylvain Guiriec at UAH  <sylvain.guiriec@lpta.in2p3.fr>",
  "eventId": "GRB 090129"
}