Excitation of MHD waves in magnetized anisotropic cosmologies
General Relativity and Quantum Cosmology
2009-11-13 v1
Abstract
The excitation of cosmological perturbations in an anisotropic cosmological model and in the presence of a homogeneous magnetic field was studied, using the resistive magnetohydrodynamic (MHD) equations. We have shown that fast-magnetosonic modes, propagating normal to the magnetic field grow exponentially and saturated at high values, due to the resistivity. We also demonstrate that the jeans-like instabilities are enhanced inside a resistive and the formation of condensations formed within an anisotropic fluid influence the growing magnetosonic waves.
Keywords
Cite
@article{arxiv.0705.2194,
title = {Excitation of MHD waves in magnetized anisotropic cosmologies},
author = {A Kuiroukidis and K Kleidis and D B Papadopoulos and L Vlahos},
journal= {arXiv preprint arXiv:0705.2194},
year = {2009}
}
Comments
12 pages, RevTex, 5 figures ps, accepted for publication to Astronomy and Astrophysics