Identification of (high-redshift) AGN with WFXT: lessons from COSMOS and CDFS
Abstract
The Wide Field X-ray Telescope (WFXT) will provide tens of millions of AGN, with more than 4x105 expected at z>3. Here we review the issues present in the identification of (large) samples of faint and high-redshift X-ray sources, and describe a statistical, powerful tool that can be applied to WFXT catalogs. The depth of associated optical and near infrared catalogs, needed for a reliable and as much complete as possible identification, are also discussed, along with the combined synergies with existing or planned facilities
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