{
  "submitter": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
  "bibcode": "2025GCN.41314....1P",
  "subject": "Corrected Swift-XRT Refined Analysis of GRB 250809A",
  "circularId": 41314,
  "eventId": "GRB 250809A",
  "body": "K.L. Page (U. Leicester) reports on behalf of the Swift-XRT team:\n\nGCN Circ. 41313 provided an incomplete automatic modelling of the XRT\nlight-curve of GRB 250809A. The first snapshot of data is dominated by a\nlarge flare, peaking at 240 s after the BAT trigger. The underlying decay\ncan be modelled as a power-law with alpha = 3.0 +/- 0.2.\n\nIf the light curve continues to decay with a power-law decay index of\n3.0, the count rate at T+24 hours will be 2.3 x 10^-8 count s^-1,\ncorresponding to an observed (unabsorbed) 0.3-10 keV flux of 5.3 x\n10^-20 (1.5 x 10^-19) erg cm^-2 s^-1.\n\nThis circular is an official product of the Swift-XRT team.\n",
  "submittedHow": "email",
  "createdOn": 1754822132674
}