{
  "bibcode": "2015GCN.17890....1M",
  "body": "C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),\nJ. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),\nA. Y. Lien (GSFC/UMBC), D. M. Palmer (LANL), T. Sakamoto (AGU),\nM. Stamatikos (OSU), R. L. C. Starling (U Leicester), T. N. Ukwatta (LANL)\n(i.e. the Swift-BAT team):\n \nUsing the data set from T-61 to T+242 sec from recent telemetry downlinks,\nwe report further analysis of BAT GRB 150530A (trigger #642018)\n(Strling, et al., GCN Circ. 17888).  The BAT ground-calculated position is\nRA, Dec = 327.511, 57.519 deg, which is \n   RA(J2000)  =  21h 50m 02.6s \n   Dec(J2000) = +57d 31' 07.4\" \nwith an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 17%.\n \nThe mask-weighted light curve shows a couple overlapping peaks starting\nat ~T-10 sec, peaking at ~T+2 sec, and ending at ~T+40 sec.\nT90 (15-350 keV) is 6.62 +- 0.84 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-4.21 to T+3.49 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.49 +- 0.11.  The fluence in the 15-150 keV band is 1.8 +- 0.1 x 10^-06 erg/cm2.\nThe 1-sec peak photon flux measured from T+0.48 sec in the 15-150 keV band\nis 4.1 +- 0.6 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/642018/BA/",
  "circularId": 17890,
  "createdOn": 1433002522000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 150530A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 150530A"
}