The Sun, the Solar Wind, and the Heliosphere

Abstract

Recent progress on radio emissions from the Sun and in the interplanetary medium is reviewed, with particular emphases on type II and III solar radio bursts, and emissions from the Earth’s fore- shock. Observations from single or multi spacecraft and ground-based instruments have provided new insights into interactions of beam-wave, wave-wave, and wave-plasma in the radiation source regions, and into the relations between type II and III bursts, flares, and coronal mass ejections. Theoretical and numeri- cal models have been developed to realistically pre- dict electron acceleration by flares or shocks of var- ious origins, source emissions, radiation propagation, and remote radio emissions. The better understanding of such radio phenomena will help us answer important questions related to electron acceleration during flares and coronal mass ejections, and the plasma conditions of the solar corona, solar wind, and the interplanetary medium