出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：VLBI observations of relativistic outflows (jets) in galactic nuclei, complemented with detailed
studies made in other spectral domains, have become an effective tool for investigating the physics
of nuclear regions in galaxies. High-resolution radio observations access directly the regions
where the jets are formed, and trace their evolution and interaction with the nuclear environment.
The emission properties, dynamics, and evolution of jets in AGN are intimately connected to the
characteristics of the central supermassive black hole, accretion disk, and broad-line region (BLR)
in active galaxies. Large VLBI surveys (15GHz VLBA survey, MOJAVE) and dedicated monitoring
programmes follow systematically the evolution of several hundreds of relativistic jets.
These observations, combined with optical and X-ray studies, yield arguably the most detailed
picture of the galactic nuclei. Recent results from studies of the nuclear regions in several active
galaxies with prominent outflows are reviewed in this contribution.
