{
  "bibcode": "2009GCN..9473....1R",
  "body": "Arne Rau (MPE) reports on behalf of the Fermi GBM Team:\n\n\"At 07:26:22.41 UT on 29 May 2009, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 090529B (trigger 265274784 / 090529310).\n\nThe on-ground calculated location, using the GBM trigger\ndata, is RA = 231.2, DEC = +32.2 (J2000 degrees,\nequivalent to 15 h 25 m, 32 d 12 '), with an uncertainty\nof 7.2 degrees (radius, 1-sigma containment,\nstatistical only; there is additionally a systematic\nerror which is currently estimated to be 2 to 3 degrees).\n \nThe angle from the Fermi LAT boresight is 36 degrees.\n\nThe GBM light curve consists of a single peak\nwith a duration (T90) of about 5.1 s (8-1000 keV).\nThe time-averaged spectrum from T0-1.792 s to T0+5.376 s is\nbest fit by a Band function with Epeak = 142 +/- 56 keV,\nalpha = -0.7 +/- 0.3, and beta = -2.0 +/- 0.3\n\n(chi squared 561 for 544 d.o.f.).\n\nThe event fluence (8-1000 keV) in this time interval is\n(3.4 +/- 0.9)E-07 erg/cm^2. The 1.28-sec peak photon flux measured\nstarting from T0+0.003 s in the 8-1000 keV band\nis 4.1 +/- 0.1 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 9473,
  "createdOn": 1243868690000,
  "email": "arau@mpe.mpg.de",
  "subject": "GRB 090529B: Fermi GBM detection",
  "submitter": "Arne Rau at MPE  <arau@mpe.mpg.de>",
  "eventId": "GRB 090529B"
}