Speaker
Description
The classical Fanaroff-Riley (FR) classification of radio galaxies is primarily based on powerful and extended FRI and FRII sources. However, more sensitive radio and optical surveys have revealed a large population of compact radio galaxies in the local Universe, known as FR0s, which outnumber FRIs by a factor of 5. Despite these populations share many properties, FRIs develop powerful kpc-scale relativistic jets while the FR0s less relativistic jets tend to stop at sub-kpc-scale and be more easily disrupted by the ISM. Current evidence suggests that black hole spin, magnetic field or specific jet composition play a role in causing these differences, while the role of the environment is still unclear. In this contribution, I will present a multi-frequency study of FR0 and FRI radio galaxies (RG), including data from SKA pathfinders and precursors, to investigate how apparently similar central engines can produce such diverse radio morphology across the RG populations.