{
  "bibcode": "2008GCN..7505....1M",
  "body": "K. McLean (GSFC/UMD), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC),\nE. Fenimore (LANL), N. Gehrels (GSFC), D. Grupe (PSU),\nH. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL),\nA. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (GSFC/ISAS),\nM. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-119 to T+183 sec from the telemetry downlinks,\nwe report further analysis of BAT GRB 080320 (trigger #306858)\n(Grupe, et al., GCN Circ. 7473).  The BAT ground-calculated position is\nRA, Dec = 177.763, 57.162 deg, which is \n   RA(J2000)  =  11h 51m 03.1s \n   Dec(J2000) = +57d 09' 42.6\" \nwith an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 93%.\n \nThe mask-weighted light curve shows a FRED peak starting at ~T-5 sec,\npeaking at ~T+0, and ending at ~T+35 sec.  There a possible (3 sigma)\nprecursor peak at ~T-55 sec with a width of about 5 sec.\nT90 (15-350 keV) is 14 +- 2 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-1.7 to T+13.8 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.70 +- 0.22.  The fluence in the 15-150 keV band is 2.7 +- 0.4 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+0.15 sec in the 15-150 keV band\nis 0.6 +- 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/306858/BA/",
  "circularId": 7505,
  "createdOn": 1206194764000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 080320, Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 080320"
}