{
  "bibcode": "2013GCN.14296....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),\nE. E. Fenimore (LANL), N. Gehrels (GSFC), B.P. Gompertz (U Leicester),\nH. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Sakamoto (AGU), G. Sato (ISAS),\nM. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-60 to T+180 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 130313A (trigger #550906)\n(Gompertz, et al., GCN Circ. 14293).  The BAT ground-calculated position is\nRA, Dec = 236.438, -0.355 deg, which is \n   RA(J2000)  =  15h 45m 45.1s \n   Dec(J2000) = -00d 21' 18.0\" \nwith an uncertainty of 2.6 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 82%.\n \nThe mask-weighted light curve shows a single pulse starting at ~T+0.0,\npeaking at ~T+0.1 sec, and ending at ~T+0.2 sec.  T90 (15-350 keV) is\n0.26 +- 0.09 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-0.02 to T+0.23 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.37 +- 0.36.  The fluence in the 15-150 keV band is 3.1 +- 0.7 x 10^-8 erg/cm2.\nThe 1-sec peak photon flux measured from T-0.36 sec in the 15-150 keV band\nis 0.5 +- 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/550906/BA/",
  "circularId": 14296,
  "createdOn": 1363204095000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 130313A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 130313A"
}