{
  "bibcode": "2015GCN.17374....1P",
  "body": "D. M. Palmer (LANL), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),\nJ. K. Cannizzo (NASA/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC),\nH. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),\nT. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+962 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 150201A (trigger #629302)\n(Cannizzo, et al., GCN Circ. 17368).  The BAT ground-calculated position is\nRA, Dec = 11.820 -37.620 deg which is\n    RA(J2000)  = 00h 47m 16.8s\n    Dec(J2000) =  -37d 37' 10\"\nwith an uncertainty of 1.7 arcmin,(radius, sys+stat, 90% containment).\nIt is 0.6 arcmin from the XRT enhanced position. The partial coding was 3%.\n\nThe burst was outside the BAT calibrated field of view.  It came into the field\nduring the slew to point the narrow-field instruments. The earliest calibrated\nevent data starts at about T+22 s. The non-weighted light curve shows two main\npeaks at about T-3 and T+1 seconds. The emission is detectable out to\napproximately T+50 sec.  T90 (15-350 keV) is 26.1 +- 5.2 sec (estimated error \nincluding systematics).\n\nThe time-averaged spectrum from T+22.2 to T+49.0 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n2.32 +- 0.24.  The fluence in the 15-150 keV band is 7.8 +- 1.2 x 10^-07 \nerg/cm2. This calibrated fluence is on the order of 5% of the total fluence.\nAll the quoted errors are at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/629302/BA/",
  "circularId": 17374,
  "createdOn": 1422901410000,
  "email": "hans.a.krimm@nasa.gov",
  "subject": "GRB 150201A, Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NASA-GSFC  <hans.a.krimm@nasa.gov>",
  "eventId": "GRB 150201A"
}