Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-04-23
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
11 pages, 5 figures, Chandra Newsletter cover article, Winter 2009. For the full newsletter see http://cxc.harvard.edu/newslet
Scientific paper
Extragalactic X-ray surveys are exceptionally powerful tools for studying the evolution of supermassive black holes and their host galaxies, by detecting large numbers of active galactic nuclei (AGN) and star-forming galaxies over a wide range of redshifts and cosmic environments. With its sensitivity and superb angular resolution, Chandra has been at the forefront of recent extragalactic surveys. This article provides a brief overview of Chandra surveys, and highlights a few recent results on the composition of the cosmic X-ray background, insights on X-ray source populations, and links between AGN and galaxy evolution, as well as discussing prospects for surveys with future X-ray missions.
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