{
  "bibcode": "2022GCN.32547....1C",
  "body": "M. Capalbi (INAF-IASFPA), M. Perri (SSDC & INAF-OAR), V. D'Elia (SSDC &\nINAF-OAR), J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), D.N. Burrows\n(PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester) and P.A.\nEvans (U. Leicester) report on behalf of the Swift-XRT team:\n\nSwift-XRT has performed follow-up observations of the\nSwift/BAT-GUANO-detected burst GRB 220909A, collecting 5.5 ks of Photon\nCounting (PC) mode data between T0+216.5 ks and T0+235.1 ks. \n\nOne uncatalogued X-ray source has been detected consistent with being\nwithin 296 arcsec of the Swift/BAT-GUANO position (Raman et al, GCN\nCirc. 32543), it is below the RASS limit and shows no definitive signs\nof fading. Therefore, at the present time we cannot confirm this as the\nafterglow. Details of this source are given below:\n\nSource 5:\n  RA (J2000.0):  216.0407  =  14:24:9.76\n  Dec (J2000.0): -8.8439  =  -08:50:37.9\n  Error: 7.3 arcsec (radius, 90% conf.)\n  Count-rate: (1.12 [+0.72, -0.53])e-3 ct s^-1\t \n  Distance: 43 arcsec from Swift/BAT-GUANO position.\n\nSeven uncatalogued sources were also detected too far from the GRB\nposition to be likely afterglow candidates.\n\nThe results of the XRT-team automatic analysis of the XRT observations,\nincluding a position-specific upper limit calculator, are available at\nhttps://www.swift.ac.uk/ToO_GRBs/00021513.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 32547,
  "createdOn": 1662961900000,
  "email": "pae9@leicester.ac.uk",
  "subject": "GRB 220909A: Swift-XRT observations",
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "eventId": "GRB 220909A"
}