{
  "bibcode": "2019GCN.25942....1B",
  "body": "D.N. Burrows (PSU), J. D. Gropp (PSU), A. Tohuvavohu (U. Toronto), K.L.\nPage (U. Leicester), A.P. Beardmore (U. Leicester), P. D'Avanzo\n(INAF-OAB), M.G. Bernardini (INAF-OAB), E. Ambrosi  (INAF-IASFPA)  and\nP.A. Evans (U. Leicester) report on behalf of the Swift-XRT team:\n\nSwift-XRT has performed follow-up observations of the Fermi/GBM\ndetected burst GRB 191001A (GCN Circ. 25893, 25894), collecting 5.2 ks\nof Photon Counting (PC) mode data between T0+114.2 ks and T0+161.3 ks.\n\nNo X-ray sources have been detected consistent with being within 2.0\narcsec\tof the likely associated optical transient AT2019rog (GCN Circ.\n25911, 25918, 25919 and Tonry et al., TNSTR 1954). The 3-sigma upper\nlimit in the field ranges from ~0.002 to ~0.003 ct s^-1, corresponding\nto a 0.3-10 keV observed flux of 8.6e-14 to 1.0e-13 erg cm^-2 s^-1\n(assuming a typical GRB spectrum).\n\nThe results of the XRT-team automatic analysis of the XRT observations,\nincluding a position-specific upper limit calculator, are available at\nhttps://www.swift.ac.uk/ToO_GRBs/00020949.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 25942,
  "createdOn": 1570134403000,
  "email": "antonino.dai@inaf.it",
  "subject": "GRB 191001A: Swift-XRT observations",
  "submitter": "Antonino D'Ai at IASF-PA  <antonino.dai@inaf.it>",
  "eventId": "GRB 191001A"
}