3 papers
astro-ph.SR2019
Godbillon-Vey Helicity and Magnetic Helicity in Magnetohydrodynamics
G. M. Webb, A. Prasad, S. C. Anco +1
The Godbillon-Vey invariant occurs in homology theory, and algebraic topology, when conditions for a co-dimension 1, foliation of a 3D manifold are satisfied. The magnetic Godbillo…
physics.plasm-ph2019
An introductory guide to fluid models with anisotropic temperatures Part 2 -- Kinetic theory, Padé approximants and Landau fluid closures
P. Hunana, A. Tenerani, G. P. Zank +7
In Part 2 of our guide to collisionless fluid models, we concentrate on Landau fluid closures. These closures were pioneered by Hammett and Perkins and allow for the rigorous incor…
physics.plasm-ph2019
An introductory guide to fluid models with anisotropic temperatures Part 1 -- CGL description and collisionless fluid hierarchy
P. Hunana, A. Tenerani, G. P. Zank +7
We present a detailed guide to advanced collisionless fluid models that incorporate kinetic effects into the fluid framework, and that are much closer to the collisionless kinetic…