{
  "bibcode": "2012GCN.13559....1S",
  "body": "M. Stamatikos (OSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),\nJ. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC),\nS. T. Holland (STScI), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS),\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 120802A (trigger #529486)\n(Holland, et al., GCN Circ. 13555).  The BAT ground-calculated position is\nRA, Dec = 44.833, 13.762 deg, which is \n   RA(J2000)  =  02h 59m 20.0s \n   Dec(J2000) = +13d 45' 43.1\" \nwith an uncertainty of 1.1 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 56%.\n \nThe mask-weighted light curve shows a small precursor peak from ~T-40 to ~T-33 sec,\nthen a fast rise at ~T-2 sec, peaking at ~T+2 sec and decaying exponentially\nwith a second peak peaking at ~T+8 sec and ending at ~T+45 sec.\nT90 (15-350 keV) is 50 +- 31 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-35.68 to T+28.02 sec is best fit by a power law\nwith an exponential cutoff.  This fit gives a photon index 1.21 +- 0.47, \nand Epeak of 57.2 +- 19.4 keV (chi squared 52.25 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 1.9 +- 0.3 x 10^-6 erg/cm2\nand the 1-sec peak flux measured from T+7.94 sec in the 15-150 keV band is\n3.0 +- 0.2 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 1.84 +- 0.10 (chi squared 58.45 for 57 d.o.f.).  All the quoted errors\nare at the 90% confidence level. \n \nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/529486/BA/",
  "circularId": 13559,
  "createdOn": 1343910572000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 120802A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 120802A"
}