X-rays from the Dawn of the Modern Universe. Chandra and XMM-Newton Observations of z>4 Quasars

Simple item page
dc.creatorVignali, C.
dc.creatorBrandt, W. N.
dc.creatorSchneider, D. P.
dc.date2003-10-22
dc.date.accessioned2026-07-07T02:10:45Z
dc.date.available2026-07-07T02:10:45Z
dc.descriptionQuasars at z>4 provide direct information on the first massive structures to form in the Universe. Recent ground-based optical surveys (e.g., the Sloan Digital Sky Survey) have discovered large numbers of high-redshift quasars, increasing the number of known quasars at z>4 to ~500. Most of these quasars are suitable for follow-up X-ray studies. Here we review X-ray studies of the highest redshift quasars, focusing on recent advances enabled largely by the capabilities of Chandra and XMM-Newton. Overall, analyses indicate that the X-ray emission and broad-band properties of high-redshift and local quasars are reasonably similar, once luminosity effects are taken into account. Thus, despite the strong changes in large-scale environment and quasar number density that have occurred from z~0-6, individual quasar X-ray emission regions appear to evolve relatively little.
dc.description4 pages; to appear in AGN Physics with the Sloan Digital Sky Survey (July 2003; Princeton, NJ), eds. G.T. Richards and P.B. Hall
dc.identifierhttps://arxiv.org/abs/astro-ph/0310659
dc.identifierhttp://arxiv.org/abs/astro-ph/0310659
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6845
dc.subjectAstrophysics
dc.titleX-rays from the Dawn of the Modern Universe. Chandra and XMM-Newton Observations of z>4 Quasars
dc.typetext

Files

Collections

arXiv