Unveiling the AGN Population with ChaMP's X-ray Vision

Details Unveiling the AGN Population with ChaMP's X-ray Vision Unveiling the AGN Population with ChaMP's X-ray Vision

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004mas..conf...21s&link_type=abstract

MULTIWAVELENGTH AGN SURVEYS. Proceedings of the Guillermo Haro Conference 2003. Held 8-12 December 2003 in Cozumel, Mexico. Edit

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The Chandra Multiwavelength Project (ChaMP) is determining the demographics of the X-ray emitting AGN population, including those with significant obscuration. The ChaMP is providing a medium-depth, wide-area sample of serendipitous X-ray sources from archival Chandra fields covering ~ 14 deg2. We present results from the X-ray and optical analysis of 357 AGN detected in 23 Chandra fields. The sample primarily includes broad emission line AGN (BLAGN; 53%) with a significant subset of narrow emission line galaxies (NELG; 23%) and absorption line galaxies (ALG; 11%). From X-ray spectral analysis, we report that NELG and ALG are obscured AGN (LX > 1042 erg s-1) with an intrinsic absorbing column in the range of 1020.5 < NH < 1023.2 cm-2. These results are the first step towards measuring the X-ray luminosity function of AGN out to z ~ 4 with the inclusion of the hidden population.

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