Modeling Poynting flux vs. kinetic-energy dominated jets
Solar and Stellar Astrophysics
2011-11-07 v1 Plasma Physics
Abstract
We present 3D-MHD AMR simulations of Poynting flux dominated (PFD) jets formed by injection of magnetic energy. We compare their evolution with a hydrodynamic jet which is formed by injecting kinetic energy with the same energy flux than the PFD jets. We predict characteristic emission distributions for each of these jets. Current-driven perturbations in PFD jets are amplified by both cooling and rotation for the regimes studied: Shocks and thermal pressure support are weakened by cooling, making the jets more susceptible to kinking. Rotation amplifies the toroidal magnetic field which also exacerbates the kink instability.
Keywords
Cite
@article{arxiv.1111.0975,
title = {Modeling Poynting flux vs. kinetic-energy dominated jets},
author = {Martín Huarte-Espinosa and Adam Frank and Eric G. Blackman},
journal= {arXiv preprint arXiv:1111.0975},
year = {2011}
}
Comments
2 pages, 1 figure to appear in the proceedings of the "Magnetic Fields in the Universe III" meeting, Zakopane, PL