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

(2) Department of Astronomy; A. Comastri (1); Astrophysics; C. Vignali (1); Italy; The Pennsylvania State University; University Park; USA); W.N. Brandt (2) ((1) INAF-Osservatorio Astronomico di Bologna

arxiv: astro-ph/0309299 · v1 · submitted 2003-09-10 · 🌌 astro-ph

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

C. Vignali (1) , A. Comastri (1) , W.N. Brandt (2) ((1) INAF-Osservatorio Astronomico di Bologna , Italy , (2) Department of Astronomy , Astrophysics , The Pennsylvania State University , University Park

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keywords bepposaxchandrapopulationquasarxmm-newtonactivitybrieflydecade

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

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