{
  "bibcode": "2006GCN..4879....1B",
  "body": "S. Barthelmy (GSFC), J. Cummings (GSFC/NRC), N. Gehrels (GSFC),\nH. Krimm (GSFC/USRA), J. Norris (GSFC), T. Sakamoto (GSFC/NRC),\nD. Palmer (LANL\non behalf of the Swift-BAT team:\n\nUsing the data set from T-300 to T+300 sec from additional telemetry\ndownlinks, we report further analysis of BAT GRB 060313 (trigger #201487)\n(Pagani, et al., GCN 4867; Markwardt, et al., 4873).  This short burst\ndoes not show any sign of extended emission in the T+1 to T+300 sec range\nat an upper limit of 0.001 cnt/detector/sec.  This corresponds to a\nflux ratio upper limit between the initial peak and the peak of any\npotential extended emission of 2000.  We reference SHBs 050724 and 051227\nwhich had ratios of 46 and ~10, respectively.\n\nThe lag analysis shows this burst to be cleanly in the short hard burst class\n(Norris and Bonnell, 2006, ApJ, accepted; see, Figure 3).\nSpecifically, the measured lags are:\n 50-100 keV to 15-25 keV:  0.8 ms +- 0.6 ms\n100-350 keV to 25-50 keV:  0.3 ms +- 0.7 ms\n\nWe further note that the lightcurve has multiple structures.  There are\nat least 20 statistically significant peaks with FWHM in the 5-15 msec range.\nThere is no perdiodic structure in the lightcurve for at least\nthe first 100 sec.",
  "circularId": 4879,
  "createdOn": 1142295111000,
  "email": "Scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 060313:  Further analysis of the Swift-BAT bright short hard burst",
  "submitter": "Scott Barthelmy at NASA/GSFC  <Scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 060313"
}