{
  "bibcode": "2006GCN..5578....1S",
  "body": "G. Sato (GSFC/ISAS), L. Barbier (GSFC), S. D. Barthelmy (GSFC),\nJ. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC),\nC. Guidorzi (Univ Bicocca&INAF-OAB), D. Hullinger (BYU-Idaho),\nH. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL),\nA. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), M. Stamatikos (GSFC/ORAU),\nJ. Tueller (GSFC)\non behalf of the Swift-BAT team:\n \nUsing the data set from T-239 to T+950 sec from recent telemetry downlinks,\nwe report further analysis of BAT GRB 060919 (trigger #230115)\n(Guidorzi, et al., GCN Circ. 5575).  The BAT ground-calculated position\nis RA,Dec = 276.900, -50.994 deg {18h 27m 36.0s, -50d 59' 39.8\"} (J2000)\n+- 1.6 arcmin, (radius, sys+stat, 90% containment).  The partial coding was 29%.\n \nThere is an initial FRED peak starting at T-1 sec, peaking at T+0,\nand lasting out to T+5 sec.  There is smaller, 4-sec wide FRED-like peak\nstarting at T+6 sec.  There is an even smaller, 4-sec wide peak centered\nat T+24 sec.  We note that our initial circular using the raw TDRSS rate\nlightcurves described a second episode of emission at T+300 sec.\nNow using the masked-tagged light curves, this second episode was due\nto a noisy detector in the instrument.  T90 (15-350 keV) is 9.1 +- 0.2 sec\n(estimated error including systematics).\n \nThe time-averaged spectrum from T-1.0 to T+9.0 is best fit by \na simple power-law model.  The power law index of the time-averaged\nspectrum is 1.85 +- 0.19.  The fluence in the 15-150 keV band\nis 5.5 +- 0.6 x 10^-7 erg/cm2.  The 1-sec peak photon flux measured\nfrom T-0.49 sec in the 15-150 keV band is 2.2 +- 0.3 ph/cm2/sec.\nAll the quoted errors are at the 90% confidence level.",
  "circularId": 5578,
  "createdOn": 1158677729000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 060919, Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 060919"
}