{
  "bibcode": "2009GCN..9228....1M",
  "body": "Sheila McBreen (UCD/MPE)\nreports on behalf of the Fermi GBM Team:\n\n\"At 03:35:17.07 UT on 22 April 2009, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 090422 (trigger 262064119 / 090422150)\nwhich was also detected by the Swift-BAT (Ukwatta et al. 2009, GCN 9185\n& Markwardt et al. 2009, GCN 9195). The GBM on-ground location is\nconsistent with the Swift position.\nThe angle from the Fermi LAT boresight is 29 degrees.\n\nThe GBM light curve consists of 2 pulses\nwith a duration (T90) of about 10 s (8-1000 keV).\nThe time-averaged spectrum from T0-2.4 s to T0+10.8 s is\nadequately fit by a simple power law function with\nindex 1.81 +/- 0.15 (chi squared 358 for 361 d.o.f.).\n\nThe event fluence (8-1000 keV) in this time interval is\n(1.0 +/- 0.1)E-6 erg/cm^2. The 0.128 sec peak photon flux measured\nstarting from T0-0.256 s in the 8-1000 keV band\nis 7.8 +/- 0.5 ph/s/cm^2.",
  "circularId": 9228,
  "createdOn": 1240588659000,
  "email": "smcbreen@mpe.mpg.de",
  "subject": "GRB 090422: Fermi GBM observation",
  "submitter": "Sheila McBreen at MPE  <smcbreen@mpe.mpg.de>",
  "eventId": "GRB 090422"
}