{
  "bibcode": "2019GCN.25279....1P",
  "body": "M. Perri (ASDC), V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), J.A. Kennea\n(PSU), B. Sbarufatti (PSU), D.N. Burrows (PSU), K.L. Page (U.\nLeicester), A.P. Beardmore (U. Leicester) and P.A. Evans (U. Leicester)\nreport on behalf of the Swift-XRT team:\n\nSwift-XRT has performed follow-up observations of the MAXI-detected\nburst GRB 190805B (Sato et al. GCN Circ. 25271) in a series of\nobservations tiled on the sky. The total exposure time is 1.3 ks,\ndistributed over 7 tiles; the maximum exposure at a single sky location\nwas 391 s. The data were collected between T0+47.6 ks and T0+49.0 ks,\nand are entirely in Photon Counting (PC) mode. \n\nNo X-ray sources have been detected. The 3-sigma upper limit in the\nfield (not including the regions where the tiles overlap) ranges from\n~0.03 to ~0.11 ct s^-1, corresponding to a 0.3-10 keV observed flux of\n1.2e-12 to 4.4e-12 erg cm^-2 s^-1 (assuming a typical GRB spectrum).\n\nThe results of the XRT-team automatic analysis of the tiled XRT\nobservations, including a position-specific upper limit calculator, are\navailable at https://www.swift.ac.uk/xrt_products/TILED_GRB00083.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 25279,
  "createdOn": 1565069087000,
  "email": "klp5@leicester.ac.uk",
  "subject": "GRB 190805B: Swift-XRT observations",
  "submitter": "Kim Page at U.of Leicester  <klp5@leicester.ac.uk>",
  "eventId": "GRB 190805B"
}