{
  "bibcode": "2020GCN.28682....1P",
  "body": "D. M. Palmer (LANL), S. D. Barthelmy (GSFC),  A. D'Ai (INAF-IASFPA),\nH. A. Krimm (NSF), S. Laha (GSFC/UMBC), A. Y. Lien (GSFC/UMBC),\nC. B. Markwardt (GSFC), T. Sakamoto (AGU), M. Stamatikos (OSU),\nT. N. Ukwatta (LANL) (i.e. the Swift-BAT team):\n\nUsing the data set from T-239 to T+823 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 201017A (trigger #1000613)\nD'Ai, et al., GCN Circ. 28666).  The BAT ground-calculated position is\nRA, Dec = 36.587, 66.663 deg which is \n  RA(J2000)  =  02h 26m 20.9s \n  Dec(J2000) = +66d 39' 45.7\" \nwith an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 37%.\n\nThe mask-weighted light curve shows a single, symmetrical main peak from roughly\nT-5 sec to T+5 sec, peaking at T+1 sec, followed by weaker emission out to T+20 sec.\nT90 (15-350 keV) is 22.08 +- 6.25 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-2.77 to T+23.87 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.48 +- 0.25.  The fluence in the 15-150 keV band is 9.0 +- 1.4 x 10^-07 erg/cm2.\nThe 1-sec peak photon flux measured from T+0.87 sec in the 15-150 keV band\nis 1.8 +- 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/1000613/BA/",
  "circularId": 28682,
  "createdOn": 1603059992000,
  "email": "hkrimm@nsf.gov",
  "subject": "GRB 201017A: Swift-BAT refined analysis",
  "submitter": "Hans Krimm at NSF/NASA-GSFC  <hkrimm@nsf.gov>",
  "eventId": "GRB 201017A"
}