{
  "createdOn": 1760838811384,
  "submittedHow": "web",
  "body": "T. Parsotan (GSFC), S. D. Barthelmy (GSFC), \nR. Gupta (GSFC), H. A. Krimm (NSF),\nS. Laha (GSFC/UMBC), A. Y. Lien (U Tampa),\nC. B. Markwardt (GSFC), M. J. Moss (GSFC),\nD. M. Palmer (LANL), D. Sadaula (GSFC/UMBC),\nT. Sakamoto (AGU) (i.e. the Swift-BAT team):\n \nUsing the data set from T-60 to T+963 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 251017A (trigger #1404904)\n(Gupta, et al., GCN Circ. 42322).  The BAT ground-calculated position is\nRA, Dec = 335.404, 7.048 deg which is \n   RA(J2000)  =  22h 21m 37.0s \n   Dec(J2000) = +07d 02' 54.4\" \nwith an uncertainty of 1.3 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 93%.\n \nThe mask-weighted BAT light curve shows main emission followed by weaker emission.\nT90 (15-350 keV) is 116.90 +- 61.91 sec (estimated error including systematics).\n \nThe time-averaged spectrum from T-5.48 to T+125.08 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.40 +- 0.20.  The fluence in the 15-150 keV band is 1.2 +- 0.1 x 10^-06 erg/cm2.\nThe 1-sec peak photon flux measured from T+6.41 sec in the 15-150 keV band\nis 1.3 +- 0.2 ph/cm2/sec.  All the quoted errors are at the 90% confidence\nlevel. \n \nThe results of the batgrbproduct analysis are available at\nhttps://swift.gsfc.nasa.gov/results/batgrbcat/BAT_refined_circular/1404904\n",
  "circularId": 42366,
  "format": "text/plain",
  "subject": "GRB 251017A: Swift-BAT refined analysis",
  "bibcode": "2025GCN.42366....1P",
  "eventId": "GRB 251017A",
  "submitter": "Rahul Gupta at NASA GSFC <rahul.gupta@nasa.gov>"
}