astronomyblog: Solar flares produce gamma r…

astronomyblog:

Solar flares produce gamma rays by several processes, one of which is
illustrated here. The energy released in a solar flare rapidly
accelerates charged particles. When a high-energy proton strikes matter
in the sun’s atmosphere and visible surface, the result may be a
short-lived particle – a pion – that emits gamma rays when it decays.

Credit: NASA’s Goddard Space Flight Center