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Magnetoconvection II

Proctor, MRE (Cambridge)
Friday 10 September 2004, 09:00-10:10

Seminar Room 1, Newton Institute


In these lectures I give a description, starting from basic concepts, of the effects of magnetic fields on convection and of convection on the fields. The principal motivation for studying such interaction is given by observations of photospheric magnetic fields, which are manifested on a wide range of scales from the largest sunspots down to small network bright points.

In the first lecture I shall discuss the fundamental kinematics and dynamics of the interaction, with emphasis on simplified models to illustrate the main ideas, including flux concentration, horizontal scale selection, the occurrence of oscillations, and local evacuation. In the second lecture I shall focus on numerical models of various types, which aim to simulate observed behaviour in the Sun.

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