2000/01/07 by O. Almaini, Almaini, O.
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0001098
Invited review, to appear in proceedings of the ``Large Scale Structure in the X-ray Universe'' conference, held in Santorini, Greece, September 1999, eds. M. Plionis and I. Georgantopoulos (Editions Frontieres), 8 pages, 2 figures. Also available at http://www.roe.ac.uk/~omar/astro.html
arxiv created 2000/01/07 · openalex publication_date 2000/01/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It is widely believed that most of the cosmic X-ray background (XRB) is produced by a vast, hitherto undetected population of obscured AGN. Deep X-ray surveys with Chandra and XMM will soon test this hypothesis. Similarly, recent sub-mm surveys with SCUBA have revealed an analogous population of exceptionally luminous, dust-enshrouded \em star-forming galaxies at high redshift. There is now growing evidence for an intimate link between these obscured populations. There are currently large uncertainties in the models, but several independent arguments lead to the conclusion that a significant fraction of the SCUBA sources (10-30% ) will contain quasars. Recent observational studies of SCUBA survey sources appear to confirm these predictions, although the relative roles of AGN and star-forming activity in heating the dust are unclear. Forthcoming surveys combining X-ray and sub-mm observations will provide a very powerful tool for disentangling these processes.