We review the X-ray studies of the highest redshift quasars, focusing on the results obtained with Chandra and XMM-Newton. Overall, the X-ray and broad-band properties of z>4 quasars and local quasars are similar, suggesting that the small-scale X-ray emission regions of Active Galactic Nuclei (AGN) are insensitive to the significant cosmic changes occurring from z=0-6.
The Realm of the First Quasars in the Universe: the X-ray View / Vignali C.; Brandt W.N.; Shemmer O.; Steffen A.; Schneider D.P.; Kaspi S.. - STAMPA. - 373:(2007), pp. 724-725. (Intervento presentato al convegno The Central Engine of Active Galactic Nuclei tenutosi a Xian (Cina) nel 16-21 ottobre (2006)).
The Realm of the First Quasars in the Universe: the X-ray View
VIGNALI, CRISTIAN;
2007
Abstract
We review the X-ray studies of the highest redshift quasars, focusing on the results obtained with Chandra and XMM-Newton. Overall, the X-ray and broad-band properties of z>4 quasars and local quasars are similar, suggesting that the small-scale X-ray emission regions of Active Galactic Nuclei (AGN) are insensitive to the significant cosmic changes occurring from z=0-6.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
