Constraining Alfv\'enic Turbulence with Helicity Invariants
Plasma Physics
2020-05-08 v1 Solar and Stellar Astrophysics
Abstract
In this paper, we study the constraints imposed by the invariants (generalized helicities and energy) of extended magnetohydrodynamics on some global characteristics of turbulence. We show that the global turbulent kinetic and magnetic energies will approach equipartition only under certain circumstances that depend on the ratio of the generalized helicities. In systems with minimal thermal energy, we demonstrate that the three invariants collectively determine the characteristic length scale associated with Alfv\'enic turbulence.
Cite
@article{arxiv.2005.03556,
title = {Constraining Alfv\'enic Turbulence with Helicity Invariants},
author = {Swadesh M. Mahajan and Manasvi Lingam},
journal= {arXiv preprint arXiv:2005.03556},
year = {2020}
}
Comments
Accepted for publication in MNRAS; 6 pages; 3 figures