Radio Emission from Active Late-Type Binaries

Radio emission is one of several indicators for enhanced stellar activity connected with strong magnetic fields. Recent advances in receiver and telescope technology have allowed radio detections of stars distributed nearly everywhere on the H-R diagram. However, the majority of stars with detectable radio emission are in close binary systems, usually with at least one component cooler than early F spectral type (e.g., RS CVn and Algol binaries). Except for an occasional reference to other stellar types for comparison, we will restrict our focus to these close binaries. For a more general discussion of stellar radio emission, see the excellent reviews by Oulk (1985) and Hjellming (1988).