The critical role of magnetic helicity in astrophysical large-scale dynamos

Details The critical role of magnetic helicity in astrophysical large-scale dynamos The critical role of magnetic helicity in astrophysical large-scale dynamos

2009-09-24

arxiv.org/abs/0909.4377v1

Plasma Phys. Control. Fusion 51, 124043 (2009)

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

14 pages, 4 figure, Proceedings of 36th EPS Conference on Plasma Physics, to appear in Plasma Physics and Controlled Fusion

Scientific paper

10.1088/0741-3335/51/12/124043

The role of magnetic helicity in astrophysical large-scale dynamos is reviewed and compared with cases where there is no energy supply and an initial magnetic field can only decay. In both cases magnetic energy tends to get redistributed to larger scales. Depending on the efficiency of magnetic helicity fluxes, the decay of a helical field can speed up. Likewise, the saturation of a helical dynamo can speed up through magnetic helicity fluxes. The astrophysical importance of these processes is reviewed in the context of the solar dynamo and an estimated upper limit for the magnetic helicity flux of 10^46 Mx^2/cycle is given.

Affiliated with

Also associated with

No associations

Rating

The critical role of magnetic helicity in astrophysical large-scale dynamos does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The critical role of magnetic helicity in astrophysical large-scale dynamos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The critical role of magnetic helicity in astrophysical large-scale dynamos will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-424915