VizieR Online Data Catalog: The Swift/BAT hard X-ray transient monitor (Krimm+, 2013)

The Swift/BAT hard X-ray transient monitor has provided a continuous historical record of the variations in 15-50keV X-ray flux of several hundred astrophysical hard X-ray sources from 2005 February 12 to the present time (2013 April 30), and its function is expected to continue as long as the Swift/BAT telescope is operational. In total, 245 X-ray sources are considered to have been detected in the BAT monitor during this period. A source is considered detected if it meets one of three criteria. The first two are systematized: either the mean rate M is >=3mCrab or the peak rate P₇ is >30mCrab and >=7σ. Simple application of these two criteria finds 223 sources. An additional 22 sources were reported to be in outburst either by Swift/BAT or by another group and then subsequently confirmed through detection in the BAT monitor. The detected sources are divided according to their variability, V, excess variance, F_var, and M into four categories: outburst, flaring, steady, and variable. A subset of the variable sources are further classified as periodic.

(2 data files).