{
  "bibcode": "2015GCN.17426....1B",
  "body": "S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),\nN. Gehrels (GSFC), L. M. Z. Hagen (PSU), H. A. Krimm (GSFC/USRA),\nA. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL),\nT. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC),\nT. N. Ukwatta (LANL) (i.e. the Swift-BAT team):\n \nUsing the data set from T-60 to T+243 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 150206A (trigger #630019)\n(Hagen, et al., GCN Circ. 17413).  The BAT ground-calculated position is\nRA, Dec = 10.076, -63.181 deg, which is \n   RA(J2000)  =  00h 40m 18.1s \n   Dec(J2000) = -63d 10' 50.8\" \nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 48%.\n \nThe mask-weighted light curve shows a slowly rising level starting at ~T-15 sec,\nwith two strong clusters of peaks at ~T+85 and ~T+98 sec, and returning\nto baseline at ~T+230 sec.  T90 (15-350 keV) is 83.2 +- 7.8 sec\n(estimated error including systematics).\n \nThe time-averaged spectrum from T-22.3 to T+164.1 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.33 +- 0.04.  The fluence in the 15-150 keV band is 1.39 +- 0.03 x 10^-5 erg/cm2.\nThe 1-sec peak photon flux measured from T+98.82 sec in the 15-150 keV band\nis 10.1 +- 0.4 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/630019/BA/",
  "circularId": 17426,
  "createdOn": 1423342102000,
  "email": "scott@lheamail.gsfc.nasa.gov",
  "subject": "GRB 150206A: Swift-BAT refined analysis",
  "submitter": "Scott Barthelmy at NASA/GSFC  <scott@lheamail.gsfc.nasa.gov>",
  "eventId": "GRB 150206A"
}