Magnetic and current helicities in solar dynamos
β Scribed by Dmitry Sokoloff; Hongqi Zhang; Kirill M. Kuzanyan; Dmitry Tomin
- Book ID
- 108065941
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 119 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0273-1177
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π SIMILAR VOLUMES
## Abstract Some common properties of helical magnetic fields in decaying and driven turbulence are discussed. These include mainly the inverse cascade that produces fields on progressively larger scales. Magnetic helicity also restricts the evolution of the largeβscale field: the field decays less
## Abstract We discuss nonlinear meanβfield galactic dynamo models and associate a universal mechanism for saturation of the dynamo with the transport of magnetic helicity. The crucial point for saturation of the dynamo is the existence of a nonβzero flux of magnetic helicity. We demonstrate that t