DEEP FIELDS: THE FAINT SUB-MJY AND MICROJY RADIO SKY

摘要

Until recently, VLBI targets have been drawn almost exclusively from the brightest and most compact radio sources in the sky, with typical flux densities well in excess of a few tens of mJy. These sources are predominantly identified with Active Galactic Nuclei (AGN), located at cosmological distances (z ti 1). Exotic but also rather rare, these luminous AGN systems have been studied in great detail by VLBI over the last 3 decades, producing many front-line discoveries along the way (see this volume and references therein).