GCN Circular 32053
A. D'Ai (INAF-IASFPA), J. D. Gropp (PSU), J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A. Melandri (INAF-OAB), T. Sbarrato (INAF-OAB) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: Swift-XRT has performed follow-up observations of the MAXI-detected burst GRB 220514B (Y. Kawakubo et al. GCN Circ. 32046) in a series of observations tiled on the sky. The total exposure time is 1.9 ks, distributed over 4 tiles; the maximum exposure at a single sky location was 1.0 ks. The data were collected between T0+57.9 ks and T0+60.1 ks, and are entirely in Photon Counting (PC) mode. No X-ray sources have been detected. The 3-sigma upper limit in the field (not including the regions where the tiles overlap) ranges from ~0.02 to ~0.04 ct s^-1, corresponding to a 0.3-10 keV observed flux of 6.7e-13 to 1.4e-12 erg cm^-2 s^-1 (assuming a typical GRB spectrum). The results of the XRT-team automatic analysis of the tiled XRT observations, including a position-specific upper limit calculator, are available at https://www.swift.ac.uk/xrt_products/TILED_GRB00106. This circular is an official product of the Swift-XRT team.