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20 January 2025

» arxiv » astro-ph/0701675

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Searching for absorbed AGN in the 2XMM-Newton pre-release EPIC Serendipitous Source Catalogue
Elisabetta Memola ; Alessandro Caccianiga ; Filomena Cocchia ; Roberto Della Ceca ; Tommaso Maccacaro ; Paola Severgnini ; Duncan J. Fyfe ; Silvia Mateos ; Mike G. Watson ; Georg Lamer ;
Date:	24 Jan 2007
Abstract:	We aim to test a method of efficiently selecting X-ray obscured AGN in the 2XMM-Newton EPIC Serendipitous Source Catalogue. By means of a strong correlation established using the XMM-Newton Hard Bright Sample between the intrinsic absorption and the hardness ratio to the 0.5-2.0 keV and 2.0-4.5 keV bands, an efficient way of selecting absorbed sources has been worked out. A hardness ratio selection based on the 2XMM-Newton pre-release Source Catalogue led us to the definition of candidates likely to be obscured in X-rays. X-ray and optical spectral analysis were performed for three objects. Strong absorption (NH > 10^{22} cm^{-2}) was detected from the X-ray analysis, confirming the efficiency of the method used to select obscured sources. The presence of absorption is also revealed in the optical band, although at a significantly lower level than inferred from the X-ray band.
Source:	arXiv, astro-ph/0701675
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