Restless Quasar Activity: From BeppoSAX to Chandra and XMM-Newton


Abstract in English

We briefly review some of the progress made in the last decade in the study of the X-ray properties of the quasar population from the luminous, local objects observed by BeppoSAX to the large, rapidly increasing population of z>4 quasars detected by Chandra and XMM-Newton in recent years.

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