Compact steep-spectrum (CSS) and peaked-spectrum (PS) radio sources are compact,
powerful radio sources. The multi-frequency observational properties and current theories …

This article gives a brief historical introduction and reviews our current understanding of jets
in radio galaxies and quasars from an observational perspective, with an emphasis on …

Context. Relativistic electrons and magnetic fields permeate the intra-cluster medium (ICM)
and manifest themselves as diffuse sources of synchrotron emission observable at radio …

We simulate the evolution of relativistic eletrons injected into the medium of a small galaxy
cluster by a central radio galaxy, studying how the initial jet power affects the dispersal and …

We report the discovery of two new giant radio galaxies (GRGs) using the MeerKAT
International GHz Tiered Extragalactic Exploration (MIGHTEE) survey. Both GRGs were …

Context. MS 0735.6+ 7421 is a galaxy cluster that hosts a central radio galaxy with a very
steep spectrum. The spectrum is produced by one of the most powerful known jetted active …

The excellent sensitivity and optimum resolution of LoTSS DR2 at 144 MHz has enabled us
to discover a giant radio galaxy (J1225+ 4011) with three distinct episodes of jet activity …

Aims. The multifaceted central radio galaxy of the cluster RBS 797 shows several episodes
of jet activity in multiple directions. We wish to understand the causes behind these dramatic …

Measurements of the quantity of radio-mode feedback injected by an active galactic nucleus
into the cluster environment have mostly relied on X-ray observations, which reveal cavities …

Super massive black holes at the centres of galaxies can cycle through periods of activity
and quiescence. Characterising the duty cycle of active galactic nuclei (AGN) is crucial for …