4 Destabilization of a Toroidal Magnetic Field and Formation of Buoyant Flux Tubes

In the previous section, we have reviewed the equilibrium properties of a strong (∼ 105 G) toroidal magnetic field stored at the base of the solar convection zone. In this section we focus on the stability of the equilibria and the mechanisms by which the magnetic field can escape in the form of discrete buoyant flux tubes.

 4.1 The buoyancy instability of isolated toroidal magnetic flux tubes
 4.2 Breakup of an equilibrium magnetic layer and formation of buoyant flux tubes
 4.3 Buoyancy breakup of a shear-generated magnetic layer

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