A variable-density absorption event in NGC 3227 mapped with<i>Suzaku</i>and<i>Swift</i>
A variable-density absorption event in NGC 3227 mapped with<i>Suzaku</i>and<i>Swift</i>
The morphology of the circumnuclear gas accreting onto supermassive black holes in Seyfert galaxies remains a topic of much debate. As the innermost regions of Active Galactic Nuclei (AGN) are spatially unresolved, X-ray spectroscopy, and in particular line-of-sight absorption variability, is a key diagnostic to map out the distribution of …