The evolution of powerful AGN at high redshift

Details The evolution of powerful AGN at high redshift The evolution of powerful AGN at high redshift

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop..201n&link_type=abstract

XMM-Newton Proposal ID #05054607

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Cosmology, Extragalactic Deep Fields And Area Surveys, Cfhtls_D4_1, Cfhtls_D4_2, Cfhtls_D4_3, Cfhtls_D4_4, Cfhtls_D4_5, Cfhtls_D3_1, Cfhtls_D3_2, Xmm-Newton Proposal 05054607

Scientific paper

The form and evolution of the X-ray luminosity function (XLF) of high z AGN, and hence the importance of black hole accretion in the early universe, is poorly constrained. A combination of deep, multi-colour optical imaging and X-ray data has proved highly efficient in compiling high z AGN samples with well defined selection and minimal incompleteness, and shows that the faint-end slope of the XLF at z=3 is significantly steeper than previously reported. Our current survey still has limited statistics around and above L*, however. The first data release of the CFHTLS Deep Fields provides an opportunity to rectify this. Relatively modest investment of XMM time (~200ks) will provide almost complete X-ray coverage over 4 square deg, enabling us to accurately determine the XLF at z=3-4.

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