{
  "bibcode": "2009GCN..9472....1V",
  "body": "A.J. van der Horst (NASA/MSFC/ORAU) reports on behalf of the\nFermi GBM Team:\n\n\"At 18:14:24.42 UT on 30 May 2009, the Fermi Gamma-ray Burst Monitor\n(GBM) triggered and located GRB 090530B (trigger 265400066 / 090530.760).\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 73.2, Dec = +13.8 (J2000 degrees, equivalent to\nJ2000 4h53m, +13d47'), with a statistical uncertainty of less than 1 degree\n(radius, 1-sigma containment, statistical only; there is additionally\na systematic error which is currently estimated to be 2 to 3 degrees).\nThe angle from the Fermi LAT boresight is 84 degrees.\n\nThe GBM light curve of this long and soft GRB consists of a double peaked\nFRED, with a total duration (T90) of 194 s (8-1000 keV). The time-averaged\nspectrum from T0-3.1 to T0+110.6 s is best fit by a Band function with\nalpha = -0.71 +/- 0.06, beta = -2.42 +/- 0.05, and Epeak = 67 +/- 3.\nThe fluence (8-1000 keV) in this interval is (5.9 +/- 0.4)E-5 erg/cm^2.\nThe 1-sec peak photon flux measured starting from T0+10.2s in the\n8-1000 keV band is 10.8 +/- 2.0 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": 9472,
  "createdOn": 1243868191000,
  "email": "Alexander.J.VanDerHorst@nasa.gov",
  "subject": "GRB 090530B: Fermi GBM detection",
  "submitter": "Alexander van der Horst at NASA/MSFC  <Alexander.J.VanDerHorst@nasa.gov>",
  "eventId": "GRB 090530B"
}