{
  "bibcode": "2010GCN.11358....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), C. J. Saxton (UCL-MSSL), M. Stamatikos (OSU),\nJ. Tueller (GSFC), T. N. Ukwatta (GWU) (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 Swift/BAT GRB 101020A (trigger #436737)\n(Saxton, et al., GCN Circ. 11357).  The BAT ground-calculated position is\nRA, Dec = 189.607, 23.129 deg which is\n    RA(J2000)  =  12h 38m 25.8s\n    Dec(J2000) = +23d 07' 44.1\"\nwith an uncertainty of 3.4 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 42%.\n\nThe mask-weighted light curve shows a very broad peak with no obvious features,\nextending roughly from T-50 sec to T+150 sec.  Most of the emission is below 50 \nkeV.  A pre-planned slew took the burst out of the field of view at about T+230 \nsec.  T90 (15-350 keV) is 175.0 +- 28. sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-50.0 to T+159.0 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n2.04 +- 0.17.  The fluence in the 15-150 keV band is 2.6 +- 0.3 x 10^-06 \nerg/cm^2. The 1-sec peak photon flux measured from T+19.00 sec in the 15-150 keV \nband is 0.5 +- 0.2 ph/cm^2/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/436737/BA/",
  "circularId": 11358,
  "createdOn": 1287668215000,
  "email": "hans.krimm@nasa.gov",
  "subject": "GRB 101020A, Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NASA-GSFC  <hans.krimm@nasa.gov>",
  "eventId": "GRB 101020A"
}