VizieR Online Data Catalog: The Swift Bulge Survey. first X-ray results (Bahramian+, 2021)

The Swift Bulge Survey covered 16deg² of the Galactic bulge epochs, using 60-s Swift/XRT exposures. The data were taken at 2-week intervals during 2017 April-October, and 2018 February-March. This allows us to probe faint transient X-ray behaviour, at fluxes below those detectable by all-sky monitors, across a significant fraction of our galaxy. We identify 104 clear Swift/XRT detections, 13 of which we attribute to optical loading of the detectors, and thus 91 significant X-ray sources. In total, 25 of these sources varied by a factor of 10 or more (generally in comparison to archival Chandra or XMM data), and another 14 by at least a factor of 5.

(1 data file).