{
  "bibcode": "2011GCN.12049....1B",
  "body": "W. H. Baumgartner (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC),\nP. D'Avanzo (INAF-OAB), E. E. Fenimore (LANL), N. Gehrels (GSFC),\nH. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (OSU),\nJ. 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 110530A (trigger #454473)\n(D'Avanzo, et al., GCN Circ. 12046).  The BAT ground-calculated position is\nRA, Dec = 282.045, 61.953 deg, which is \n   RA(J2000)  =  18h 48m 10.8s \n   Dec(J2000) = +61d 57' 11.2\" \nwith an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 98%.\n \nThe mask-weighted light curve shows a single pulse starting at ~T-50 sec\nwith a slow rise, peaking at ~T+2 sec, and ending at ~T+15 sec.\nT90 (15-350 keV) is 19.6 +- 3.1 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-4.5 to T+17.4 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n2.06 +- 0.24.  The fluence in the 15-150 keV band is 3.3 +- 0.5 x 10^-7 erg/cm2.\nThe 1-sec peak photon flux measured from T+1.01 sec in the 15-150 keV band\nis 0.4 +- 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/454473/BA/",
  "circularId": 12049,
  "createdOn": 1306778262000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 110530A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 110530A"
}