Gyro-synchrotron Emission and Absorption in a Magnetoactive Plasma

The intensity, spectrum and polarization of gyro-synchrotron radiation from an arbitrary distribution of electrons in a magnetoactive plasma are calculated. These calculations are based on detailed theories of gyro-synchrotron emission and absorption as well as on the equations of radiation transfer in the limit of large Faraday rotation. By performing extensive numerical calculations, for both isotropic and anisotropic electron distributions, we investigate the influence of reabsorption and the Razin effect on the spectrum and polarization of the radiation. Using the same formalism and calculations, we also investigate the possibility of negative absorption in an anisotropic gyro-synchrotron source. •NAS-NRC Resident Research Associate