X-ray vs. H2O maser emission in AGN

Water megamaser radio emission originates from the innermost parsec(s) of activegalactic nuclei (AGN). Xray photons are produced in regions even closer to thesupermassive central object. Combining the information provided by these twotracers has the potential to substantially improve our understanding of the AGNphysics. Correlations between Xray and water maser emission in AGN have beenreported, however, the lack of systematic studies affects the confidence levelof these results. Here we propose to complete the approved XMM project withProposal ID 065480, aimed at measuring column densities in a sample of five AGNhosting H2O maser emission, thus shedding light on the physics of their activenuclei and improving the statistics of the aforementioned studies. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]