{
  "bibcode": "2014GCN.16927....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), F. E. Marshall (NASA/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-240 to T+700 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 141017A (trigger #615672)\n(Marshall, et al., GCN Circ. 16919).  The BAT ground-calculated position is\nRA, Dec = 93.601, -58.596 deg which is\n   RA(J2000)  =  06h 14m 24.2s\n   Dec(J2000) = -58d 35' 45.9\"\nwith an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 64%.\n\nThe mask-weighted light curve shows a double-peaked structure.\nThe first peak starts at ~T-1 s, peaks at ~T+1 s, and ends at ~T+3s.\nThe second peak starts at ~T+40s, peaks at ~T+46s, and ends at ~T+60s.\nT90 (15-350 keV) is 55.7 +- 2.8 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-1.2 to T+65.1 sec is best fit by a power law\nwith an exponential cutoff.  This fit gives a photon index 1.05 +- 0.28,\nand Epeak of 80.4 +- 17.2 keV (chi squared 39.44 for 56 d.o.f.).  For this\nmodel the total fluence in the 15-150 keV band is 3.1 +- 0.1 x 10^-6 erg/cm2\nand the 1-sec peak flux measured from T+46.60 sec in the 15-150 keV band is\n6.7 +- 0.3 ph/cm2/sec.  A fit to a simple power law gives a photon index\nof 1.66 +- 0.06 (chi squared 55.80 for 57 d.o.f.).  All the quoted errors\nare at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/615672/BA/",
  "circularId": 16927,
  "createdOn": 1413728117000,
  "email": "amy.y.lien@nasa.gov",
  "subject": "GRB 141017A, Swift-BAT refined analysis",
  "submitter": "Amy Lien at GSFC  <amy.y.lien@nasa.gov>",
  "eventId": "GRB 141017A"
}