Active galactic nuclei (AGN) are energetic astrophysical sources powered by accretion onto
supermassive black holes in galaxies, and present unique observational signatures that …

Massive black holes (BHs) are at once exotic and yet ubiquitous, residing at the centers of
massive galaxies in the local Universe. Recent years have seen remarkable advances in …

We present the VLA-COSMOS 3 GHz Large Project based on 384 h of observations with the
Karl G. Jansky Very Large Array (VLA) at 3 GHz (10 cm) toward the two square degree …

A significant fraction of nearby galaxies show evidence of weak nuclear activity unrelated to
normal stellar processes. Recent high-resolution, multiwavelength observations indicate that …

We study the composition of the faint radio population selected from the Karl G. Jansky Very
Large Array Cosmic Evolution Survey (VLA-COSMOS) 3 GHz Large Project, which is a radio …

We propose a scenario where blazars are classified into flat-spectrum radio quasars
(FSRQs), BL Lacertae (BL Lac) objects, low-synchrotron, or high-synchrotron peaked …

We present an analysis of multitime-scale variability in line-of-sight X-ray-absorbing gas as a
function of optical classification in a large sample of Seyfert active galactic nuclei (AGN) to …

We have recently shown that X-ray observations of the population of 'low-excitation'radio
galaxies, which includes most low-power, Fanaroff–Riley class I sources as well as some …

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 …

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 …