SPACE AND COSMIC RAY PHYSICS SEMINAR

University of Maryland
Atlantic Building, Room 2400
4:30 PM Monday, February 24, 2020
Coffee, Tea & Snacks 4:15-4:30 PM

Peter Yoon
IPST, University of Maryland

Theoretical Model of Solar Type III Radio Bursts

"Solar radio bursts are observed typically as type II bursts (produced by shock accelerated electrons), type III bursts (produced by flare accelerated electrons), and occasionally, type IV bursts (produced by trapped electrons). They provide remote indications of electron instabilities in the corona and inner heliosphere, relevant for understanding physical processes and also for predicting space weather" [from NASA web page]. Type I emission is a long lasting radio "storm" and Type V emission is related to type III radio bursts. Among the five types of solar radio emissions, the type III is most intensely studied since the late 1950s, throughout 1960s and 1970s. In spite of the long history, the rigorous first-principle based theoretical model was not available until quite recently. In this talk I will present first a tutorial on the basic understanding of solar radio emission phenomenology, and later discuss recent developments.