{
  "bibcode": "2022GCN.32215....1P",
  "body": "K.L. Page (U. Leicester), M. Capalbi (INAF-IASFPA), M. Perri (SSDC &\nINAF-OAR), V. D'Elia (SSDC & INAF-OAR), J.A. Kennea (PSU), A.\nTohuvavohu (U. Toronto), B. Sbarufatti (PSU), A.P. Beardmore (U.\nLeicester) and P.A. Evans (U. Leicester) report on behalf of the\nSwift-XRT team:\n\nSwift-XRT has performed follow-up observations of the\nFermi/LAT-detected burst GRB 220617A (Di Lalla et al. GCN Circ. 32212),\ncollecting 4.9 ks of Photon Counting (PC) mode data between T0+23.9 ks\nand T0+37.1 ks. \n\nFive uncatalogued X-ray sources have been detected, however none of\nthem is above the RASS limit or shows definitive signs of fading.\nTherefore, at the present time we cannot identify which, if any, is the\nafterglow. Details of these sources are given below.\n\nPlease note: due to an error, the original GCN announcing these Swift\nobservations (GCN 32211) referred to \"GRB 220617B\", whereas the\nobservations were of GRB 220617A.\n\nSource 1:\n  RA (J2000.0):  157.1531  =  10:28:36.74\n  Dec (J2000.0): +15.4493  =  +15:26:57.6\n  Error: 6.4 arcsec (radius, 90% conf.)\n  Count-rate: (2.7 [+1.5, -1.1])e-3 ct s^-1   \n  Distance: 730 arcsec from Fermi/LAT position.\n  Flux: (5.5 [+3.0, -2.2])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV)\n\nSource 2:\n  RA (J2000.0):  156.9298  =  10:27:43.15\n  Dec (J2000.0): +15.4059  =  +15:24:21.1\n  Error: 6.4 arcsec (radius, 90% conf.)\n  Count-rate: (1.45 [+0.92, -0.65])e-3 ct s^-1\t \n  Distance: 458 arcsec from Fermi/LAT position.\n\nSource 3:\n  RA (J2000.0):  157.0400  =  10:28:9.60\n  Dec (J2000.0): +15.4886  =  +15:29:19.1\n  Error: 6.4 arcsec (radius, 90% conf.)\n  Count-rate: (1.67 [+0.91, -0.69])e-3 ct s^-1\t \n  Distance: 314 arcsec from Fermi/LAT position.\n\nSource 4:\n  RA (J2000.0):  156.9896  =  10:27:57.50\n  Dec (J2000.0): +15.4454  =  +15:26:43.4\n  Error: 5.7 arcsec (radius, 90% conf.)\n  Count-rate: (1.75 [+0.93, -0.70])e-3 ct s^-1\t \n  Distance: 321 arcsec from Fermi/LAT position.\n\nSource 5:\n  RA (J2000.0):  156.8566  =  10:27:25.60\n  Dec (J2000.0): +15.3577  =  +15:21:27.8\n  Error: 6.3 arcsec (radius, 90% conf.)\n  Count-rate: 0.0114 [+0.0046, -0.0036] ct s^-1   \n  Distance: 716 arcsec from Fermi/LAT position.\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/00021505.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 32215,
  "createdOn": 1655548911000,
  "email": "pae9@leicester.ac.uk",
  "subject": "GRB 220617A: Swift-XRT observations",
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "eventId": "GRB 220617A"
}