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.
Vignali C., Brandt W.N., Shemmer O., Steffen A., Schneider D.P., Kaspi S. (2007). The Realm of the First Quasars in the Universe: the X-ray View. SAN FRANCISCO : Astronomical Society of the Pacific.
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.File in questo prodotto:
Eventuali allegati, non sono esposti
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
