{
  "bibcode": "2021GCN.30745....1D",
  "body": "P. D'Avanzo, M. G. Bernardini, A. Melandri, T. Sbarrato (INAF-OAB), P. A. Evans (U. Leicester)\n report on behalf of the Swift team:\n\n\nSwift-XRT has performed further follow-up observations of the Swift/BAT-GUANO-detected burst \nGRB 210827A (James DeLaunay et al. GCN Circ. 30732), collecting a total of 12.2 ks of Photon \nCounting (PC) mode data between T0+44.4 ks and T0+257.2 ks. The uncatalogued candidate \nX-ray source (Source 3) reported in Gropp et al. (GCN Circ. 30734) faded to a count-rate of 3e-3 ct s^-1, \nthus suggesting it as the likely X-ray afterglow of GRB 210827A. The light curve can be described with \na single power-law with a decay index alpha = 1.0 (+0.5, -0.4). \n\nThe results of the XRT-team automatic analysis are available at https://www.swift.ac.uk/xrt_products/00021461 <https://www.swift.ac.uk/xrt_products/00021461> \n\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 30745,
  "createdOn": 1630330463000,
  "email": "pda.davanzo@gmail.com",
  "subject": "GRB 210827A: further Swift-XRT observations",
  "submitter": "Paolo D'Avanzo at INAF-OAB  <pda.davanzo@gmail.com>",
  "eventId": "GRB 210827A"
}