4 papers
No evidence of vorticity production from irrotational turbulent gravitational collapse yet
Axel Brandenburg, Evangelia Ntormousi, Jennifer Schober
Gravitational collapse creates large amounts of kinetic energy that could potentially seed turbulence. If such turbulence were also suitable to initiate dynamo action, the resultin…
Theory of the kinetic helicity effect on turbulent diffusion of magnetic and scalar fields
Igor Rogachevskii, Nathan Kleeorin, Axel Brandenburg
Kinetic helicity is a fundamental characteristics of astrophysical turbulent flows. It is not only responsible for the generation of large-scale magnetic fields in the Sun, stars,…
Helicity effect on turbulent passive and active scalar diffusivities
Axel Brandenburg, Petri J. Käpylä, Igor Rogachevskii +1
Turbulent flows are known to produce enhanced effective magnetic and passive scalar diffusivities, which can fairly accurately be determined with numerical methods. It is now known…
Magnetically assisted vorticity production in decaying acoustic turbulence
Axel Brandenburg, Evan Scannapieco
We study vorticity production in isothermal, subsonic, acoustic (nonvortical), and decaying turbulence due to the presence of magnetic fields. Using three-dimensional numerical sim…