Mechanisms of solar pores and sunspots formation

Kitiashvili Irina, irinasun@stanford.edu, Stanford University, USA

Abstract
Spontaneous formation of self-organized magnetic structures such as sunspots and pores is one of intriguing and oldest problem, which represents a complicated interaction of convection and magnetic fields on different scales. Observations of formation of sunspots and pores show a fast process magnetic field accumulation into stable long-living magnetic structures. However, the physical mechanisms of the flux accumulation and stability of the magnetic structures are not clear. Development of observational capabilities, theory, and realistic-type numerical simulations open a new level of our understanding of the turbulent processes of magnetic field accumulation. In this talk I will discuss the recent progress in observations and realistic radiative MHD simulations that provide important clues for possible mechanisms of formation and stability of the magnetic structures, and their links to the dynamo process.