The z>4 Quasar Population Observed by Chandra and XMM-Newton
arXiv:astro-ph/0406033 · doi:10.1142/9789812702432_0068
Abstract
The current status of our Chandra and XMM-Newton project on high-redshift (z>4) quasars is briefly reviewed. We report the main results obtained in the last few years for the detected quasars, along with a few (~10%) intriguing cases where no detection has been obtained with Chandra snapshot observations.
arXiv comment4 pages, to appear in the proceedings of 'Multiwavelength AGN surveys' (Cozumel, December 8-12 2003), ed. R. Maiolino and R. Mujica