Radio-wave diagnostics of interstellar flares in binary systems

Abstract

The possibilities for radio wave diagnostics of interstellar flares in RS CVn and Algol type binary systems using both VLBI and single dish measurements are discussed. The model for interstellar flares based on the Ohm's generalised law and the circuit analog for a current-carrying filament between two stars of the binary system is proposed. It has been shown that intense “core” radio radiation can exist between two components. Filament oscillations can be a driver for the re-current flares and/or for the quasi-periodic variations of radio emission. The oscillation period depends on the kinetic temperature of a filament. We suggest that the coherent plasma radiation plays an important role in the flare radio emission. Interstellar flare radio emission is a good diagnostic tool for the plasma parameters in a flare.