{
  "bibcode": "2009GCN..9662....1V",
  "body": "A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team: \n\n\"At 03:51:00.34 UT on 12 July 2009, the Fermi Gamma-Ray Burst Monitor\ntriggered and located GRB 090712 (trigger 269063462 / 090712160), \nwhich was also detected by the SWIFT-BAT (Holland et al. 2008, GCN 9659,\nBarthelmy et al., GCN 9660). The GBM on-ground location is consistent \nwith the Swift position. \n\nThe angle from the Fermi LAT boresight is 33 degrees.\n\nThe GBM light curve shows one single pulse with a duration (T90) \nof about 72 s (8-1000 keV). The time-averaged spectrum from \nT0-22.528 s to T0+49.153 s is best fit by a power law function \nwith an exponential high energy cutoff.  The power law index \nis -0.68 +/- 0.13 and the cutoff energy, parameterized as Epeak, \nis 505 +/- 101 keV (chi squared 511 for 486 d.o.f.).\n\nThe event fluence (8-1000 keV) in this time interval is \n(4.2 +/- 0.3)E-06 erg/cm^2. The 1.024-sec peak photon flux measured \nstarting from T0+7.168 s in the 8-1000 keV band \nis 0.63 +/- 0.04 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary; \nfinal results will be published in the GBM GRB Catalog.\"",
  "circularId": 9662,
  "createdOn": 1247498761000,
  "email": "azk@mpe.mpg.de",
  "subject": "GRB 090712: Fermi GBM observation",
  "submitter": "Andreas von Kienlin at MPE  <azk@mpe.mpg.de>",
  "eventId": "GRB 090712"
}