{
  "submitter": "Takanori Sakamoto at AGU <tsakamoto@phys.aoyama.ac.jp>",
  "body": "S. Laha (GSFC/UMBC), E. Ambrosi (INAF-IASFPA), S. D. Barthelmy (GSFC),\nR. Gupta (GSFC), H. A. Krimm (NSF), S. Laha (GSFC/UMBC), A. Y. Lien (U Tampa),\nC. B. Markwardt (GSFC), M. J. Moss (GSFC), D. M. Palmer (LANL),\nT. Parsotan (GSFC), D. Sadaula (GSFC/UMBC), T. Sakamoto (AGU)\n(i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+303 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 251007A (trigger #1402466)\n(Ambrosi, et al., GCN Circ. 42146).  The BAT ground-calculated position is\nRA, Dec = 128.162, 21.810 deg which is\n   RA(J2000)  =  08h 32m 38.8s\n   Dec(J2000) = +21d 48' 36.6\"\nwith an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 85%.\n\nThe mask-weighted light curve shows a complex structure starting at ~T-1 sec,\npeaking at T+56 sec, and decaying to background at T+110 sec.\nT90 (15-350 keV) is 64.19 +- 5.17 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-0.04 to T+103.43 sec is best fit by a simple\npower-law model.  The power law index of the time-averaged spectrum is\n1.32 +- 0.03.  The fluence in the 15-150 keV band is 1.04 +- 0.02 x\n10^-5 erg/cm2. The 1-sec peak photon flux measured from T+56.14 sec \nin the 15-150 keV band is 9.5 +- 0.3 ph/cm2/sec. All the quoted errors are \nat the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttps://swift.gsfc.nasa.gov/results/batgrbcat/BAT_refined_circular/1402466",
  "submittedHow": "web",
  "eventId": "GRB 251007A",
  "format": "text/plain",
  "bibcode": "2025GCN.42186....1L",
  "circularId": 42186,
  "createdOn": 1760105305025,
  "subject": "GRB 251007A: Swift-BAT refined analysis"
}