Whitepaper #125 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: solar physics.
The transformative technique of ultra-broadband radio imaging spectroscopy is discussed, which serves as the observational basis for new insights into particle acceleration and transport. These include the dynamic measurement of coronal magnetic fields, the measurement of the spatiotemporal evolution of the electron distribution function, and the observation of flares and CMEs as coupled systems.