{
  "bibcode": "2013GCN.14741....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),\nE. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),\nA. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), A. Melandri (INAF-OAB),\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-61 to T+242 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 130603B (trigger #557310)\n(Melandri, et al., GCN Circ. 14735).  The BAT ground-calculated position is\nRA, Dec = 172.222, 17.063 deg, which is \n   RA(J2000)  =  11h 28m 53.2s \n   Dec(J2000) = +17d 03' 48.2\" \nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 100%.\n \nThe mask-weighted light curve shows a single FRED-like spike starting\nat ~T_0.000, peaking at ~T+0.012 sec, and returning to baseline at~T+0.2sec.\nThere is a smaller pulse ridding on the tail of the initial pulse.\nT90 (15-350 keV) is 0.18 +- 0.02 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T+0.01 to T+0.26 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n0.82 +- 0.07.  The fluence in the 15-150 keV band is 6.3 +- 0.3 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T-0.36 sec in the 15-150 keV band\nis 6.4 +- 0.3 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/557310/BA/",
  "circularId": 14741,
  "createdOn": 1370297770000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 130603B: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 130603B"
}