406 citations · 1.8k across the 23 of their papers we have counts for
12 papers · 1 filter
The problem of small and large scale fields in the solar dynamo
A. Brandenburg, N. E. L. Haugen, P. J. Käpylä +1
Three closely related stumbling blocks of solar mean field dynamo theory are discussed: how dominant are the small scale fields, how is the alpha effect quenched, and whether magne…
Magnetic field generation in fully convective rotating spheres
W. Dobler, M. Stix, A. Brandenburg
Magnetohydrodynamic simulations of fully convective, rotating spheres with volume heating near the center and cooling at the surface are presented. The dynamo-generated magnetic fi…
Nonlinear current helicity fluxes in turbulent dynamos and alpha quenching
Kandaswamy Subramanian, Axel Brandenburg
Large scale dynamos produce small scale current helicity as a waste product that quenches the large scale dynamo process (alpha effect). This quenching can be catastrophic (i.e.int…
Helical coronal ejections and their role in the solar cycle
Axel Brandenburg, Christer Sandin, Petri J. Käpylä
The standard theory of the solar cycle in terms of an alpha-Omega dynamo hinges on a proper understanding of the nonlinear alpha effect. Boundary conditions play a surprisingly imp…
How Long can Left and Right Handed Life Forms Coexist?
Axel Brandenburg, Tuomas Multamäki
Reaction-diffusion equations based on a polymerization model are solved to simulate the spreading of hypothetic left and right handed life forms on the Earth's surface. The equatio…
Mach number dependence of the onset of dynamo action
Nils Erland L. Haugen, Axel Brandenburg, Antony J. Mee
The effect of compressibility on the onset of nonhelical turbulent dynamo action is investigated using both direct simulations as well as simulations with shock-capturing viscositi…