Identification of (high-redshift) AGN with WFXT: lessons from COSMOS and CDFS

The Wide Field X-ray Telescope (WFXT) will provide tens of millions of AGN, with more than 4x10^5 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...

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Bibliographic Details
Published in:arXiv.org 2010-10
Main Authors: Brusa, Marcella, Gilli, Roberto, Civano, Francesca, Comastri, Andrea, Fiore, Fabrizio, Vignali, Cristian
Format: Article
Language:English
Subjects:
Red shift
Statistical methods
X ray sources
X ray telescopes
Online Access:Get full text
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Summary:The Wide Field X-ray Telescope (WFXT) will provide tens of millions of AGN, with more than 4x10^5 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
ISSN:2331-8422