2024 solar storm accelerated electrons inside Earth's 'impenetrable barrier'

Japan's Arase probe detected ultrarelativistic electrons deep inside Earth's radiation barrier during the 2024 solar storm. Research led by Nagoya University found the electrons were accelerated locally rather than entering from outer radiation belts.

• Arase detected electrons inside the barrier during the 2024 storm
• Acceleration was local, not driven by inflow from outer belts
• The study was led by Nagoya University researchers