Image:Twistedflux.png

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[edit] Summary

Differential rotation of the Sun. The undisturbed, bipolar magnetic field configuration during solar minimum marks the start of the solar cycle (i). The faster rotation at the solar equator then drags the magnetic field around the solar body (ii) until the Sun approaches solar maximum where the buoyant magnetic flux is twisted to such an extent flares and highly dynamic coronal loops become commonplace across the Sun’s surface (iii and iv). The buoyancy force governing the upward motion of coronal loops can be written as p_i+B²/8π=p_e, where p_i is the internal pressure of the flux, p_e is the external pressure and B is the magnetic field strength.

Cartoon created by Ian O'Neill and can be found in the thesis entitled Quiescent Coronal Loops Heated by Turbulence.

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