Outflows from active galactic nuclei (AGNs) are one of the fundamental mechanisms by
which the central supermassive black hole interacts with its host galaxy. Detected in≥ 50 …

In the early Universe, while galaxies were still forming, black holes as massive as a billion
solar masses powered quasars. Supermassive black holes are found at the centres of most …

X-ray spectroscopy offers an opportunity to study the complex mixture of emitting and
absorbing components in the circumnuclear regions of active galactic nuclei (AGN), and to …

We describe techniques for incorporating feedback from star formation and black hole (BH)
accretion into simulations of isolated and merging galaxies. At present, the details of these …

We present a new semi-analytic model that self-consistently traces the growth of
supermassive black holes (BH) and their host galaxies within the context of the Lambda cold …

Context. Blue-shifted Fe K absorption lines have been detected in recent years between 7
and 10 keV in the X-ray spectra of several radio-quiet AGNs. The derived blue-shifted …

We discuss a numerical model for black hole growth and its associated feedback processes
that for the first time allows cosmological simulations of structure formation to self …

We present a physically motivated model for the early coevolution of massive spheroidal
galaxies and active nuclei at their centers. Within dark matter halos, forming at the rate …

Context. Understanding the physics and geometry of accretion and ejection around super
massive black holes (SMBHs) is important to understand the evolution of active galactic …

The existence of ionized X-ray absorbing layers of gas along the line of sight to the nuclei of
Seyfert galaxies is a well established observational fact. This material is systematically …