{
  "bibcode": "2009GCN..9055....1V",
  "body": "A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team: \n\n\"At 06:42:22.10 UT on 30 March 2009, the Fermi Gamma-Ray Burst Monitor \ntriggered and located GRB 090330 (trigger 260088144 / 090330279).\nThe on-ground calculated location, using the GBM trigger \ndata, is RA = 159.2, DEC = -7.7 (J2000 degrees, \nequivalent to 10h 37m, -07d 42'), with an uncertainty \nof 2.1 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 50 degrees.\n\nThe GBM light curve consists of a slowly rising pulse \nwith a duration (T90) of about 80 s (8-1000 keV). \nThe time-averaged spectrum from T0-2.048 s to T0+24.576 s is \nwell fit by a power law function with an exponential\nhigh energy cutoff.  The power law index is -1.01 +/- 0.04 and \nthe cutoff energy, parameterized as Epeak, is 261 +/- 18 keV \n(chi squared 606 for 609 d.o.f.).\n\nThe event fluence (8-1000 keV) in this time interval is \n(1.14 +/- 0.03)E-05 erg/cm^2. The 1-sec peak photon flux measured \nstarting from T0+12.288 s in the 8-1000 keV band \nis 6.8 +/- 0.3 ph/s/cm^2.\n\nA Band function fits the spectrum equally well \n(chi squared 605 for 608 d.o.f.) with Epeak= 246 +/- 25 keV, \nalpha = -0.99 +/- 0.05 and beta = -2.68 +/- 0.55. \n\nThe spectral analysis results presented above are preliminary; \nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 9055,
  "createdOn": 1238428790000,
  "email": "azk@mpe.mpg.de",
  "subject": "GRB 090330: Fermi GBM detection",
  "submitter": "Andreas von Kienlin at MPE  <azk@mpe.mpg.de>",
  "eventId": "GRB 090330"
}