Magnetic_buoyancy_instability
Magnetic buoyancy
Force on magnetic flux tubes
In plasma physics, magnetic buoyancy is an upward force exerted on magnetic flux tubes that are immersed in electrically conducting fluids and are under the influence of a gravitational force. It acts on magnetic flux tubes in stellar convection zones where it plays an important role in the formation of sunspots and starspots.[1] It was first proposed by Eugene Parker in 1955.