{
  "bibcode": "2018GCN.23097....1G",
  "body": "S.L. Gibson (U. Leicester), Z. Liu (NAOC / U. Leicester), V. D'Elia\n(ASDC), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), B. Sbarufatti\n(INAF-OAB/PSU), D.N. Burrows (PSU), A. Tohuvavohu (PSU) and P.A. Evans\n(U. Leicester) report on behalf of the Swift-XRT team:\n\nSwift-XRT has performed follow-up observations of the\nFermi/GBM-detected burst GRB 180806A (Malacaria et al. GCN Circ.\n23095), collecting 1.8 ks of Photon Counting (PC) mode data between\nT0+57.6 ks and T0+76.2 ks. \n\nTwo uncatalogued X-ray sources are detected, of which one (\"Source 1\")\nis fading with 3-sigma significance, and is therefore likely the GRB\nafterglow.  The position of this source is RA, Dec=11.5536, +24.3370\nwhich is equivalent to:\n\nRA (J2000): 00:46:12.86\nDec(J2000): +24:20:13.2\n\nwith an uncertainty of 5.0 arcsec (radius, 90% confidence). \nThis position is 1.3 arcsec from the Fermi/GBM position and 2.7 arcsec\nfrom the OT position reported by Lipunov (GCN 23091) and Watson (GCN\n23092).\n\nThe source is fading with alpha >2.2.\n\nThe results of the XRT-team automatic analysis of the likely afterglow\nare at http://www.swift.ac.uk/ToO_GRBs/00020812/Source1.php.\nThe results of the full analysis of the XRT observations are available\nat http://www.swift.ac.uk/ToO_GRBs/00020812.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 23097,
  "createdOn": 1533680100000,
  "email": "antonino.dai@ifc.inaf.it",
  "subject": "GRB 180806A: Swift-XRT afterglow detection",
  "submitter": "Antonino D'Ai at IASF-PA  <antonino.dai@ifc.inaf.it>",
  "eventId": "GRB 180806A"
}