{
  "bibcode": "2010GCN.10479....1K",
  "body": "H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), \nJ. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC),\nC. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC),\nT. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU),\nE. Troja (NASA/GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-239 to T+963 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 100305A (trigger #414905)\n(Troja, et al., GCN Circ. 10470).  The BAT ground-calculated position is\nRA, Dec = 168.373, 42.381 deg which is\n    RA(J2000)  =  11h 13m 29.5s\n    Dec(J2000) = +42d 22' 50.7\"\nwith an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 22%.\n\nThe mask-weighted light curve shows a broad structure of two overlapping peaks\nbeginning at T+0 and continuing to T+80 sec with the highest peak at T+60 sec.\nThere is soft, low-level emission extending to ~T+200 sec. T90 (15-350 keV) is \n69.7 +- 8.7 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-9.2 to T+70.3 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.27 +- 0.23.  The fluence in the 15-150 keV band is 1.5 +- 0.2 x 10^-6 \nerg/cm^2. The 1-sec peak photon flux measured from T+62.72 sec in the 15-150 keV \nband is 0.9 +- 0.3 ph/cm2/sec.  All the quoted errors are at the 90% confidence\nlevel.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/414905/BA/",
  "circularId": 10479,
  "createdOn": 1267825913000,
  "email": "hans.krimm@nasa.gov",
  "subject": "GRB 100305A, Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NASA-GSFC  <hans.krimm@nasa.gov>",
  "eventId": "GRB 100305A"
}