XMM-Newton Observations of a Complete Sample of Optically Selected Type 2 Seyfert Galaxies

(abridged)The majority of Active Galactic Nuclei (AGN) suffer from significant obscuration by surrounding dust and gas. X-ray surveys in the 2-10 keV band will miss the most heavily-obscured AGN in which the absorbing column density exceeds \sim10^{24}cm^{-2} (the Compton-thick AGN). It is therefore vital to know the fraction of AGN... Show more