Context. Apertif is a phased-array feed system for the Westerbork Synthesis Radio
Telescope, providing forty instantaneous beams over 300 MHz of bandwidth. A dedicated …

Giant radio sources (GRSs) defined to be> 0.7 Mpc are the largest single objects in the
Universe and can be associated with both galaxies (GRGs) and quasars (GRQs). They are …

Context. Many massive galaxies launch jets from the accretion disk of their central black
hole, but only∼ 10 3 instances are known in which the associated outflows form giant radio …

We present a revised measurement of the extragalactic background light (EBL) at radio
frequencies based on a near complete compendium of radio source counts. We present the …

New-generation radio telescopes like LOFAR are conducting extensive sky surveys,
detecting millions of sources. To maximize the scientific value of these surveys, radio source …

We present early science results from Deep Investigation of Neutral Gas Origins (DINGO),
an i survey using the Australian Square Kilometre Array Pathfinder (ASKAP). Using ASKAP …

We present the selection of high-redshift (z≳ 5.7) radio-loud (RL) quasi-stellar object (QSO)
candidates from the combination of the radio Rapid ASKAP Continuum Survey (RACS; at …

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 …

We present a multi-wavelength analysis, from the radio to the X-ray band, of the redshift z=
6.44 VIK J2318− 31 radio-loud quasi-stellar object, one of the most distant currently known …

Clusters of galaxies have been found to host Mpc-scale diffuse, non-thermal radio emission
in the form of central radio halos and peripheral relics. Turbulence and shock-related …