Dr. Miyoshi is a professor of Institute for Space-Earth Environmental Research, Nagoya University and the project scientist of JAXA/Arase satellite mission. He has studied the radiation belts, the inner magnetosphere, wave-particle interactions and space weather. He has also worked the high-speed aurora imaging to observe the pulsating aurora. He has served as an editor of Annales of Geophysicae, and other international journals, and a bureau member of SCOSTEP.