Discovering the absorbed AGN population responsible for the hard X-ray background

Details Discovering the absorbed AGN population responsible for the hard X-ray background Discovering the absorbed AGN population responsible for the hard X-ray background

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2246s&link_type=abstract

Chandra Proposal ID #08900380

Physics

Chandra Proposal Id #08900380

Scientific paper

The X-ray background peaks around 30 keV and is supposed to be dominated by absorbed type 2 AGN. Up to now the majority of these sources have not been found. INTEGRAL provides an opportunity to detect highly absorbed sources. Deep extragalactic observations provide an efficient tool to shed light on this question by providing samples of new hard X-ray sources. Many new and up to now unidentified sources were found by our team in a deep extragalactic observation of 2.5 Msec in the Virgo region. We ask to observe two of these new sources for which Chandra will: provide a precise position (allowing for optical follow up), give a measurement of the absorption column density, provide an X-ray spectral description and provide an information on the redshift when the Fe lines are detected.

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