{
  "bibcode": "2011GCN.12399....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),\nN. Gehrels (GSFC), E. A. Hoversten (PSU), H. A. Krimm (GSFC/USRA),\nC. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC),\nM. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-60 to T+243 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 110928A (trigger #504215)\n(Hoversten, et al., GCN Circ. 12394).  The BAT ground-calculated position is\nRA, Dec = 257.745, 36.547 deg, which is \n   RA(J2000)  =  17h 10m 58.7s \n   Dec(J2000) = +36d 32' 49.3\" \nwith an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 37%.\n \nThe mask-weighted light curve shows a single FRED-like peak starting at ~T_zero\nand ending at ~T+30 sec.  T90 (15-350 keV) is 26.7 +- 4.8 sec (estimated error\nincluding systematics).\n \nThe time-averaged spectrum from T-0.53 to T+27.88 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.09 +- 0.30.  The fluence in the 15-150 keV band is 6.9 +- 1.1 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+6.84 sec in the 15-150 keV band\nis 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/504215/BA/",
  "circularId": 12399,
  "createdOn": 1317183444000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 110928A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 110928A"
}