Abstract
It is shown that the turbulent-dynamo α effect converts magnetic helicity from the turbulent field to the mean field when the turbulence is electromagnetic, while the magnetic helicity of the mean field is transported across space when the turbulence is electrostatic or due to the electron diamagnetic effect. In all cases, however, the dynamo effect strictly conserves the total helicity except for resistive effects and a small battery effect. Implications for astrophysical situations, especially for the solar dynamo, are discussed. 1999
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3198-3201 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 83 |
| Issue number | 16 |
| DOIs | |
| State | Published - Oct 18 1999 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Fingerprint Dive into the research topics of 'Turbulent dynamos and magnetic helicity'. Together they form a unique fingerprint.
Cite this
Ji, H. (1999). Turbulent dynamos and magnetic helicity. Physical review letters, 83(16), 3198-3201. https://doi.org/10.1103/PhysRevLett.83.3198