{
  "bibcode": "2009GCN..9474....1R",
  "body": "Arne Rau (MPE) reports on behalf of the Fermi GBM Team:\n\n\"At 13:32:00.49  UT on 29 May 2009, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 090529C (trigger 265296722 / 090529564).\n\nThe on-ground calculated location, using the GBM trigger\ndata, is RA = 162.7, DEC = 47.3 (J2000 degrees,\nequivalent to 10 h 51 m, 47 d 18 '), with an uncertainty\nof 1.5 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 69 degrees.\n\nThis burst was also independently detected by INTEGRAL SPI-ACS.\n\nThe GBM light curve consists of two narrow pulses\nwith a duration (T90) of about 10.4 s (8-1000 keV).\nThe time-averaged spectrum from T0-0.002 s to T0+10.048 s is\nbest fit by a Band function with Epeak = 188 +/- 15 keV,\nalpha = -0.84 +/- 0.05, and beta = -2.1 +/- 0.1\n\n(chi squared 795 for 648 d.o.f.).\n\nThe event fluence (8-1000 keV) in this time interval is\n(3.1 +/- 0.1)E-06 erg/cm^2. The 1.028-sec peak photon flux measured\nstarting from T0+9.024 s in the 8-1000 keV band\nis 25 +/- 1 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog.\n\nWe further report that the Fermi Observatory executed a maneuver \nfollowing this trigger and tracked the\nburst location for the next 5 hours, subject to Earth-angle constraints. \"",
  "circularId": 9474,
  "createdOn": 1243868957000,
  "email": "arau@mpe.mpg.de",
  "subject": "GRB 090529C: Fermi GBM detection",
  "submitter": "Arne Rau at MPE  <arau@mpe.mpg.de>",
  "eventId": "GRB 090529C"
}