The LOFAR Two-metre Sky Survey (LoTSS) is a deep 120–168 MHz imaging survey that will
eventually cover the entire northern sky. Each of the 3170 pointings will be observed for 8 h …

Context. The cluster environment has a strong impact on galaxy star formation, as seen by
the fact that clusters host proportionally more red, passive galaxies relative to the field. Ram …

The International LOFAR Telescope is an interferometer with stations spread across Europe.
With baselines of up to~ 2000 km, LOFAR has the unique capability of achieving sub …

We present the Multifrequency Snapshot Sky Survey (MSSS), the first northern-sky Low
Frequency Array (LOFAR) imaging survey. In this introductory paper, we first describe in …

Identifying active galactic nuclei (AGNs) and isolating their contribution to a galaxy's energy
budget is crucial for studying the co-evolution of AGNs and their host galaxies. Brightness …

We investigated the radio continuum spectra of 14 star-forming galaxies by fitting
nonthermal (synchrotron) and thermal (free-free) radiation laws. The underlying radio …

We present LOFAR observations at 120–168 MHz of 42 systems with possible X-ray cavities
in their hot atmosphere, of which 17 are groups or ellipticals, 19 are nearby clusters (z< 0.3) …

We present the second data release of high-resolution (≤ 0.2 arcsec) 1.5-GHz radio images
of 177 nearby galaxies from the Palomar sample, observed with the e-MERLIN array, as part …

Context. Galactic winds play a key role in regulating the evolution of galaxies over cosmic
time. In recent years, the role of cosmic rays (CRs) in the formation of the galactic wind has …

Context. Arp 220 is the prototypical ultra luminous infrared galaxy (ULIRG). Despite
extensive studies, the structure at MHz-frequencies has remained unknown because of …