Whitepaper #123 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: ground-based missions/projects; solar physics.
The Frequency Agile Solar Radiotelescope (FASR) is a radio spectroscopic imager addressing all of solar science. It has been strongly endorsed as a top community priority by both Astronomy & Astrophysics Decadal Surveys and Solar & Space Physics Decadal Surveys in the past two decades. The community must seize this opportunity to modernize the FASR design and build the instrument in this decade.