We use direct numerical simulations of forced MHD turbulence with a forcing function that produces two different signs of kinetic helicity in the upper and lower parts of the domain. We show that the mean flux of magnetic helicity from the small‐scale field between the two parts of the domain can be described by a Fickian diffusion law with a diffusion coefficient that is approximately independent of the magnetic Reynolds number and about one third of the estimated turbulent magnetic diffusivity. The data suggest that the turbulent diffusive magnetic helicity flux can only be expected to alleviate catastrophic quenching at Reynolds numbers of more than several thousands. We further calculate the magnetic helicity density and its flux in the...
Magnetohydrodynamic (MHD) turbulence is an important part of astrophysical processes, which gives ri...
The effect on large-scale dynamics of small-scale kinetic helicity injection in three-dimensional re...
Context. Dynamos in the Sun and other bodies tend to produce magnetic fields that possess magnetic h...
We use direct numerical simulations of forced MHD turbulence with a forcing function that produces t...
Magnetic helicity fluxes are investigated in a family of gauges in which the contribution from ideal...
Key words magnetic fields – turbulence – MHD We discuss nonlinear mean-field galactic dynamo models ...
Magnetic helicity fluxes in turbulently driven α² dynamos are studied to demonstrate their ability t...
In turbulent dynamos the production of large-scale magnetic fields is accompanied by a separation of...
Context. Magnetic helicity has the remarkable property of being a conserved quantity of ideal magnet...
Investigations of the inverse cascade of magnetic helicity are conducted with pseudospectral, three-...
We consider the magnetic helicity balance for the galactic dynamo in the framework of the local dyna...
The broad variety of ways in which magnetic helicity affects astrophysical systems, in particular dy...
We study the inverse cascade of magnetic helicity in conducting fluids, as pertinent to the generati...
Context. Dynamos in the Sun and other bodies tend to produce magnetic fields that possess ...
Context. Dynamos in the Sun and other bodies tend to produce magnetic fields that possess magnetic h...
Magnetohydrodynamic (MHD) turbulence is an important part of astrophysical processes, which gives ri...
The effect on large-scale dynamics of small-scale kinetic helicity injection in three-dimensional re...
Context. Dynamos in the Sun and other bodies tend to produce magnetic fields that possess magnetic h...
We use direct numerical simulations of forced MHD turbulence with a forcing function that produces t...
Magnetic helicity fluxes are investigated in a family of gauges in which the contribution from ideal...
Key words magnetic fields – turbulence – MHD We discuss nonlinear mean-field galactic dynamo models ...
Magnetic helicity fluxes in turbulently driven α² dynamos are studied to demonstrate their ability t...
In turbulent dynamos the production of large-scale magnetic fields is accompanied by a separation of...
Context. Magnetic helicity has the remarkable property of being a conserved quantity of ideal magnet...
Investigations of the inverse cascade of magnetic helicity are conducted with pseudospectral, three-...
We consider the magnetic helicity balance for the galactic dynamo in the framework of the local dyna...
The broad variety of ways in which magnetic helicity affects astrophysical systems, in particular dy...
We study the inverse cascade of magnetic helicity in conducting fluids, as pertinent to the generati...
Context. Dynamos in the Sun and other bodies tend to produce magnetic fields that possess ...
Context. Dynamos in the Sun and other bodies tend to produce magnetic fields that possess magnetic h...
Magnetohydrodynamic (MHD) turbulence is an important part of astrophysical processes, which gives ri...
The effect on large-scale dynamics of small-scale kinetic helicity injection in three-dimensional re...
Context. Dynamos in the Sun and other bodies tend to produce magnetic fields that possess magnetic h...