a turbulent
dynamo
(m=0) / dipole dynamo
New, compared to Riga & Karlsruhe exp.
from kinematic modes based on mean flow
Transverse
intermittent dipole
Phys. Rev. Lett. 97, 044503 (2006).
Ravelet et al.,
Phys. Fludis 17,
117104 (2005)
Mean axisymetric
dipole
Important role
of fluctuations
Cowling theorem
not generated by the mean flow
(Cowling theorem)