VizieR Online Data Catalog: Flux-limited sample of HBL blazars, OUSXG (Giommi+, 2020)

The OUSXG catalog is a flux limited unbiased survey of the X-ray sky contains 31227 serendipitous sources. The catalog was built by analyzing all the Swift XRT X-ray images centered on Gamma Ray Bursts generated by Swift over the last 15 years. The use of the Swift_deepsky pipeline, which does not require any expertise in X-ray astronomy, associated with effective cleaning algorithms, allowed us to build a sample of serendipitous X-ray sources that is sufficiently clean to be used for statistical purposes without any visual or manual intervention. The X-ray LogN-LogS of extragalactic sources shows that it is in excellent agreement with previous measurements. We have built a deep radio-flux limited sample of 23 HBL blazars, combined with larger (and brighter) samples selected using the RASS survey, is suitable for detailed statistical analyses.

(2 data files).