Fractal multi-scale nature of solar/stellar magnetic fields
Abstract
An abstract mathematical concept of fractal organization of certain complex objects received significant attention in astrophysics during last decades. The concept evolved into a broad field including multi-fractality and intermittency, percolation theory, self-organized criticality, theory of catastrophes, etc. Such a strong mathematical and physical approach provide new possibilities for exploring various aspects of astrophysics. In particular, in the solar and stellar magnetism, multi-fractal properties of magnetized plasma turned to be useful for understanding burst-like dynamics of energy release events, conditions for turbulent dynamo action, nature of turbulent magnetic diffusivity, and even the dual nature of solar dynamo. In this talk, I will briefly outline how the ideas of multi-fractality are used to explore the above mentioned aspects of solar magnetism.
- Publication:
-
Solar and Astrophysical Dynamos and Magnetic Activity
- Pub Date:
- July 2013
- DOI:
- 10.1017/S1743921313002652
- arXiv:
- arXiv:1305.5282
- Bibcode:
- 2013IAUS..294..289A
- Keywords:
-
- turbulence;
- Sun: magnetic fields;
- Sun: granulation;
- Sun: photosphere;
- instrumentation: high angular resolution;
- methods: data analysis;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 16 pages, 6 figures