Objects with active nuclei are reviewed. Their fine structure and its variation in time are considered. In a number of objects, velocities of the components exceeding the velocity of light are observed. Models that explain this phenomenon are discussed.
PACS:98.70.−f DOI:10.1070/PU1983v026n07ABEH004451 URL: https://ufn.ru/en/articles/1983/7/d/ Citation: Matveenko L I "Apparent superluminal separation velocities of the components of extragalactic objects" Sov. Phys. Usp.26 612–633 (1983)