| Abstract | Contents: (1) Introduction: Why "jets"? What makes a "narrow feature" a "jet"? (2) The incidence of extragalactic radio jets: A list of known jets. Occurrence rates of jets. Jets in weak sources? (3) Trends with luminosity: Sidedness. Magnetic configuration. Size, curvature, and misalignments. (4) Structural details: Collimation, freedom, and confinement. Radio spectra. Intensity evolution. (5) Radio jets at other wavelengths: Optical and infrared wavelengths. X-ray wavelengths. (6) Jet lag-missing physics: Velocity estimates. The velocity dilemma. Jet/hot-spot symmetries and the sidedness dilemma. Stability. Unified models. A broader unified model. (7) Summary and some key experiments. |
