GCN Circular 32053
Subject
GRB 220514B: Swift-XRT observations
Date
2022-05-16T10:17:35Z (2 years ago)
From
Phil Evans at U of Leicester <pae9@leicester.ac.uk>
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.