{
  "bibcode": "2020GCN.29018....1D",
  "body": "A. D'Ai (INAF-IASFPA), D.N. Burrows (PSU), J. D. Gropp (PSU), J.A.\nKennea (PSU), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester),\nA. Melandri (INAF-OAB), T. Sbarrato (INAF-OAB) and P.A. Evans (U.\nLeicester) report on behalf of the Swift-XRT team:\n\nSwift-XRT has performed follow-up observations of the\nFermi/LAT-detected burst GRB 201208A (Dirirsa et al. GCN Circ. 29003),\ncollecting 5.0 ks of Photon Counting (PC) mode data between T0+70.4 ks\nand T0+111.4 ks. \n\nFour uncatalogued X-ray sources are detected, of which one (\"Source 2\")\nis above the 2SXPS 3-sigma upper limit at this position, and is\ntherefore likely the GRB afterglow. Using 2046 s of PC mode data and 2\nUVOT images, we find an enhanced XRT position (using the XRT-UVOT\nalignment and matching UVOT field sources to the USNO-B1 catalogue):\nRA, Dec = 158.32352, -28.71989 which is equivalent to:\n\nRA (J2000): 10h 33m 17.64s\nDec(J2000): -28d 43' 11.6\"\n\nwith an uncertainty of 3.1 arcsec (radius, 90% confidence). This\nposition is 112 arcsec from the Fermi/LAT position.  The results of the\nXRT-team automatic analysis of the likely afterglow are at\nhttps://www.swift.ac.uk/ToO_GRBs/00021405/Source2.php.\nThe results of the full analysis of the XRT observations are available\nat https://www.swift.ac.uk/ToO_GRBs/00021405.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 29018,
  "createdOn": 1607543297000,
  "email": "aaron.tohu@gmail.com",
  "subject": "GRB 201208A: Swift-XRT afterglow detection",
  "submitter": "Aaron Tohuvavohu at U Toronto  <aaron.tohu@gmail.com>",
  "eventId": "GRB 201208A"
}