Helicity Balance and Steady-State Strength of the Dynamo Generated Galactic Magnetic Field

Details Helicity Balance and Steady-State Strength of the Dynamo Generated Galactic Magnetic Field Helicity Balance and Steady-State Strength of the Dynamo Generated Galactic Magnetic Field

2002-05-16

arxiv.org/abs/astro-ph/0205266v1

ASTRON. ASTROPHYS. 361, L5-L8 (2000)

Astronomy and Astrophysics

Astrophysics

4 pages, aa.cls

Scientific paper

We demonstrate that the inclusion of the helicity flux in the magnetic helicity balance in the nonlinear stage of galactic dynamo action results in a radical change in the magnetic field dynamics. The equilibrium value of the large-scale magnetic field is then approximately the equipartition level. This is in contrast to the situation without the flux of helicity, when the magnetic helicity is conserved locally, which leads to substantially subequipartition values for the equilibrium large-scale magnetic field.

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