{
  "bibcode": "2023GCN.33379....1E",
  "body": "P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:\n\nUsing  promptly downlinked XRT event data for GRB 230228A, we find an\nenhanced XRT position of the afterglow: RA, Dec: 18.37804, 44.48289\nwhich is equivalent to:\n   RA (J2000)  = 01 13 30.73\n   Dec (J2000) = +44 28 58.4\nwith an uncertainty of 1.9 arcseconds (radius, 90% confidence).\nAnalysis of the promptly available data is online at\nhttp://www.swift.ac.uk/sper/1156572.\n\nPosition enhancement is is described by Goad et al. (2007, A&A, 476,\n1401) and Evans et al. (2009, MNRAS, 397, 1177).\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 33379,
  "createdOn": 1677566105000,
  "email": "pae9@leicester.ac.uk",
  "subject": "GRB 230228A: Prompt enhanced Swift-XRT position",
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "eventId": "GRB 230228A"
}