{
  "bibcode": "2011GCN.12312....1S",
  "body": "T. Sakamoto (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),\nJ. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC),\nH. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL),\nG. Sato (ISAS), M. Stamatikos (OSU), J. Tueller (GSFC),\nT. N. Ukwatta (MSU), B.-B. Zhang (PSU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-61 to T+242 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 110827A (trigger #501520)\n(Zhang, et al., GCN Circ. 12310).  The BAT ground-calculated position is\nRA, Dec = 164.059, 53.817 deg which is\n     RA(J2000)  =  10h 56m 14.2s\n     Dec(J2000) = +53d 49' 01.2\"\nwith an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 100%.\n\nThe mask-weighted light curve shows a single peak starting at ~T-15 sec,\npeaking at T+5 sec and returning to background by T+35 sec.\nAt T+195 sec, a pre-planned slew moved the source out of the field of view.\nT90 (15-350 keV) is 8.5 +- 1.1 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-2.9 to T+6.3 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.24 +- 0.27.  The fluence in the 15-150 keV band is 1.8 +- 0.3 x 10-07\nerg/cm2. The 1-sec peak photon flux measured from T+2.12 sec in the 15-150 keV\nband is 0.4 +- 0.1 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/501520/BA/",
  "circularId": 12312,
  "createdOn": 1314453284000,
  "email": "hans.a.krimm@nasa.gov",
  "subject": "GRB 110827A, Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NASA-GSFC  <hans.a.krimm@nasa.gov>",
  "eventId": "GRB 110827A"
}