{
  "bibcode": "2011GCN.12602....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),\nN. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), J. L. Racusin (NASA/GSFC), 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-61 to T+242 sec from recent telemetry downlinks,\nwe report further analysis of BAT GRB 111129A (trigger #508712)\n(Racusin, et al., GCN Circ. 12600).  The BAT ground-calculated position is\nRA, Dec = 307.415, -52.722 deg, which is \n   RA(J2000)  =  20h 29m 39.5s \n   Dec(J2000) = -52d 43' 20.9\" \nwith an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 61%.\n \nThe mask-weighted light curve shows two slightly overlapping peaks\nstarting at ~T-7 sec, peaking at ~T-5 and T+1 sec, and ending at ~T+10 sec.\nT90 (15-350 keV) is 7.6 +- 1.4 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-6.29 to T+2.88 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n2.56 +- 0.38.  The fluence in the 15-150 keV band is 1.8 +- 0.4 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+0.41 sec in the 15-150 keV band\nis 0.9 +- 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/508712/BA/",
  "circularId": 12602,
  "createdOn": 1322614045000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 111129A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 111129A"
}