{
  "bibcode": "2008GCN..8513....1G",
  "body": "C. Guidorzi (INAF-OAB) on behalf of the Swift-XRT team reports:\n\nSwift-XRT re-observed the field of the Fermi-LAT and Fermi-GBM\nGRB 081024B (Omodei et al. GCN Circ. 8407; Connaughton et al GCN Circ. 8408)\nfrom 13.1 to 15.1 days after the burst with a net exposure of 9.8 ks.\n\nWe compared this with our previous observations (Guidorzi et al. GCN Circ.\n8410, 8416, 8454). We still detect source 2, identified in our first\nobservation (Guidorzi et al. GCN Circ. 8410), with a count rate of\n(1.1 +- 0.4)e-3 count/s, which is compatible with a constant rate\nsource throughout the entire XRT observations.\nWe also derived an upper limit to the possible power-law decay\nindex of alpha<0.4 from ~1e5 to ~1.3e6 s (90% confidence).\nWe conclude that source 2, initially proposed as possibly associated\nwith GRB 081024B (Guidorzi et al. GCN Circ. 8416, 8454), is not the\ncorresponding X-ray afterglow.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 8513,
  "createdOn": 1226332893000,
  "email": "cristiano.guidorzi@brera.inaf.it",
  "subject": "GRB 081024B: Swift-XRT late-time observations",
  "submitter": "Cristiano Guidorzi at INAF-OAB  <cristiano.guidorzi@brera.inaf.it>",
  "eventId": "GRB 081024B"
}