Description
In the last few year it has become increasingly evident that the study of X-ray variability of high redshift AGNs enables us to constrain the physics and evolution of accreting supermassive Black Holes through cosmic time, and to use them as cosmological probes. eRosita will provide variability data for large AGN samples allowing us to significantly reduce the current uncertainties, provided that the biases due to sparse temporal sampling are properly accounted for. I will discuss the lesson learned from studies of high redshift AGNs in deep surveys such as the Chandra Deep Field South, COSMOS etc., and how it can be applied to the next generation of X-ray survey data in order to make them competitive with different physical probes.
Primary author
Maurizio Paolillo
(Università di Napoli Federico II)
