{
  "bibcode": "2011GCN.12237....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),\nM. De Pasquale (UCL-MSSL), E. E. Fenimore (LANL), N. Gehrels (GSFC),\nH. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (OSU),\nJ. Tueller (GSFC), T. N. Ukwatta (MSU)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-239 to T+963 sec from recent telemetry downlinks,\nwe report further analysis of BAT GRB 110801A (trigger #458521)\n(De Pasquale, et al., GCN Circ. 12228).  The BAT ground-calculated position is\nRA, Dec = 89.415, 80.958 deg, which is \n   RA(J2000)  =  05h 57m 39.6s \n   Dec(J2000) = +80d 57' 28.5\" \nwith an uncertainty of 1.1 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 78%.\n \nThe mask-weighted light curve shows two main clusters of peaks.  The first\nstarts at ~T-30 sec, with a maximum at ~T+2 sec, and a long exponental decay\nalmost down to background before the second cluster.  The second cluster\nstarts ~T+310 sec, peaks at ~T+340 sec, and ending at ~T+550 sec.\nT90 (15-350 keV) is 385 +- 10 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-24.2 to T+385.0 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.84 +- 0.10.  The fluence in the 15-150 keV band is 4.7 +- 0.3 x 10^-6 erg/cm2.\nThe 1-sec peak photon flux measured from T+341.78 sec in the 15-150 keV band\nis 1.1 +- 0.2 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/458521/BA/",
  "circularId": 12237,
  "createdOn": 1312293966000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 110801A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 110801A"
}