AGN feedback from Galaxy-Scale jets across cosmic time with LOFAR-VLBI

Despite major progress in understanding AGN feedback on galaxy group and cluster scales, a fundamental question remains: how does AGN feedback operate on the scale of individual galaxies (<100 kpc), where jets and outflows first interact with the host-galaxy interstellar medium? In this talk, I focus on the role of galaxy-scale radio jets as a key channel through which supermassive black holes couple to the interstellar and circumgalactic medium. Using data from the first generation of the LOFAR-VLBI Deep Fields —deep, wide-area radio surveys that combine unprecedented sensitivity with sub-arcsecond resolution enabled by LOFAR's international baselines— we assemble a large (≈1000 objects down to ∼10 kpc in size), statistically representative sample of galaxy-scale jets and their host-galaxy properties over a wide redshift range, up to z ≃ 3. This dataset enabled a systematic characterisation of jet sizes, morphologies and energetics. Furthermore allowed us to assess how frequently radio jets remain confined within their host galaxies, providing new observational constraints on the onset and efficiency of AGN feedback on galactic scales. The extensive multi-wavelength coverage of the LOFAR Deep Fields further allowed us to investigate how jet incidence and properties depend on host-galaxy stellar mass and accretion mode, and how these trends evolve with cosmic time through redshift-binned population studies, up to the epoch of cosmic noon z ~ 2 and beyond, the most active phase of galaxy formation, when star formation and black-hole accretion were most intensive.