Wave Phenomena in Dense Conglomerate of Flux Tubes

Abstract

In this chapter we shall consider the properties of strongly magnetized regions of the sun such as sunspots, pores, and active regions, where random magnetic flux tubes form a dense conglomerates . Physical processes and, in particular, the wave phenomena in closely packed flux tubes exhibit some distinct features that are observable and can be used for testing the structure and energetics of these regions. One of the most pronounced effects is the strong enhancement of the dissipation of the incoming wave energy, caused by large local gradients of velocity, temperature, and pressure arising at borders of neighboring small-scale inhomogeneities.