Magnetohydrodynamics and Plasma Cosmology

Details Magnetohydrodynamics and Plasma Cosmology Magnetohydrodynamics and Plasma Cosmology

2005-12-22

arxiv.org/abs/gr-qc/0512131v1

Int.J.Theor.Phys.46:2283-2298,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, RevTeX, To appear in the Proceedings of the Peyresq X Meeting, IJTP Conference Series

Scientific paper

10.1007/s10773-007-9346-x

We study the linear magnetohydrodynamic (MHD) equations, both in the Newtonian and the general-relativistic limit, as regards a viscous magnetized fluid of finite conductivity and discuss instability criteria. In addition, we explore the excitation of cosmological perturbations in anisotropic spacetimes, in the presence of an ambient magnetic field. Acoustic, electromagnetic (e/m) and fast-magnetosonic modes, propagating normal to the magnetic field, can be excited, resulting in several implications of cosmological significance.

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