Multi-scale nature of solar magnetism and cyclicity of magnetic activity

Solanki Sami, solanki-office@mps.mpg.de, Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany and Kyung-Hee University, Yong-In, Gyeonggi, Republic of Korea


Abstract
The Sun's magnetic field displays significant structure on all spatial scales that observations can currently resolve. MHD simulations indicate that the structuring continues unabated to ever smaller scales. Similarly, variations in the solar magnetic field, magnetic activity and in the Sun's radiative output are found on all time scales sampled so far. These properties are likely related to the importance of turbulent convection in producing magnetic structures and in driving the evolution of the magnetic field. In this presentation our knowledge of the multi-scale nature of the Sun's magnetic field and of the solar cycle is outlined. The possible background for such a behaviour is also discussed.