An X-ray analysis of high-z blazar candidates

We present the results of a systematic X-ray analysis of a complete and well-defined sample of 23 high-z (z=4-5.5) blazar candidates selected from the CLASS radio survey. In particular, we have complemented the existing archival data (mostly Chandra) with dedicated Swift-XRT observations reaching an almost complete X-ray coverage of the sample. Our aim is to the determination of the nature of all the objects in the sample using X-ray data, since a strong and flat (Gamma <1.5) X-ray emission is a striking signature of the presence of an oriented relativistic jet.

Related Organizations

University of Milan
Italy

Keywords

high redshift, Active Galactic Nuclei, AGN, blazar

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