Radio galaxies at low frequencies: high spatial and spectral resolution studies with LOFAR

This thesis uses novel observations from the Low Frequency Array to address open questions on the topic of galaxy evolution. The highest resolution images at ultra low radio frequencies are used to investigate the physical processes present in the radio emission from distant galaxies. Detections of spectral features from carbon atoms in a nearby galaxy are also presented and used to constrain the temperature and density of cold gas that is a key component of all galaxies

Spatially resolved studies of extragalactic jets in high redshift radio galaxies

High Energy Astrophysic

Measuring cavity powers of active galactic nuclei in clusters using a hybrid X-ray-radio method.: A new window on feedback opened by subarcsecond LOFAR-VLBI observations

Large scale structure and cosmologyGalaxie

The resolved jet of 3C 273 at 150 MHz: sub-arcsecond imaging with the LOFAR international baselines

Galaxie

Connecting radio emission to AGN wind properties with broad absorption line quasars

Galaxie

High-resolution international LOFAR observations of 4C 43.15: spectral ages and injection indices in a high-z radio galaxy

Galaxie