{
  "bibcode": "2020GCN.27811....1C",
  "body": "M. Capalbi (INAF-IASFPA), M. Perri (ASDC), V. D'Elia (ASDC), A.\nTohuvavohu (U. Toronto), B. Sbarufatti (PSU), D.N. Burrows (PSU), J.P.\nOsborne (U. Leicester), K.L. Page (U. Leicester) 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 200524A (Fana Dirirsa et al. GCN Circ.\n27797), collecting 5.0 ks of Photon Counting (PC) mode data between\nT0+36.4 ks and T0+55.7 ks. \n\nFour uncatalogued X-ray sources are detected, of which one (\"Source 6\")\nis  believed to be the afterglow. Using 1644 s of PC mode data and 1\nUVOT image, we find an enhanced XRT position (using the XRT-UVOT\nalignment and matching UVOT field sources to the USNO-B1 catalogue):\nRA, Dec = 213.04474, +60.90538 which is equivalent to:\n\nRA (J2000): 14h 12m 10.74s\nDec(J2000): +60d 54' 19.4\"\n\nwith an uncertainty of 4.4 arcsec (radius, 90% confidence). This\nposition is 9.2 arcmin from the Fermi/LAT position, and 3 arcsec from\nZTF20abbiixp (Ho et al., GCN 27799).\n\nThe light curve can be modelled with a power-law decay with a decay\nindex of alpha=3.42 (+0.06, -2.83).\n\nThe results of the XRT-team automatic analysis are available at\nhttp://www.swift.ac.uk/xrt_products/00021001.\nThe results of the full analysis of the XRT observations are available\nat https://www.swift.ac.uk/ToO_GRBs/00021001.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 27811,
  "createdOn": 1590380096000,
  "email": "klp5@leicester.ac.uk",
  "subject": "GRB 200524A: Swift-XRT afterglow detection",
  "submitter": "Kim Page at U.of Leicester  <klp5@leicester.ac.uk>",
  "eventId": "GRB 200524A"
}