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What are Alfvén waves?

Alfvén waves are magnetic waves of plasma which bypass the photosphere before exploding with heat in the Sun’s upper atmosphere.

These waves appear when bulk motions of electrically charged particles disturb the magnetic field found on the surface of the Sun (fields which are visible as dark sunspots).

The heat waves travel along what are known as solar magnetic flux tubes before bursting into the corona, creating its enormous temperature.

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