Radio-loud compact radio sources (CRSs) are characterised by morphological compactness
of the jet structure centred on the active nucleus of the galaxy. Most of the local elliptical …

Radio astronomy has changed. For years it studied relatively rare sources, which emit
mostly non-thermal radiation across the entire electromagnetic spectrum, ie radio quasars …

The radiative cooling timescales at the centers of hot atmospheres surrounding elliptical
galaxies, groups and clusters are much shorter than their ages. Therefore, hot atmospheres …

Approximately 10% of active galactic nuclei exhibit relativistic jets, which are powered by the
accretion of matter onto supermassive black holes. Although the measured width profiles of …

The structure of the M87 jet, from milliarcsecond to arcsecond scales, is extensively
investigated, utilizing the images taken with the European VLBI Network, MERLIN, and Very …

We present an X-ray spectral analysis of a large sample of 25 'bare'active galactic nuclei
(AGN), sources with little or no complicating intrinsic absorption, observed with Suzaku. Our …

We present an extended scheme for the calculation of the profiles of emission lines from
accretion discs around rotating black holes. The scheme includes discs with angular …

A typical galaxy is thought to contain tens of millions of stellar-mass black holes, the
collapsed remnants of once massive stars, and a single nuclear supermassive black hole …

The outflow efficiency (η) from black hole (BH) accretion disc systems is known to depend
upon both the BH spin (a) and the amount of large-scale magnetic flux threading the BH and …

We revisit the concept of a blazar sequence that relates the synchrotron peak frequency (ν
peak) in blazars with synchrotron peak luminosity (L peak, in νL ν) using a large sample of …