We consider the special case of an infinite, uniform medium with B 0 = B 0 ê z and J 0 = 0. In that case we can expand an arbitrary displacement in plane wave solutions as where k is the wave vector and the addition of the complex conjugate is implied. When we substitute this into the ideal MHD wave equation, we find that ∇→i k and ∂ /∂t → iω, so that the problem is reduced to algebra.
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© 2009 Springer-Verlag Berlin Heidelberg
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Schnack, D.D. (2009). Waves in a Uniform Medium: Special Cases. In: Lectures in Magnetohydrodynamics. Lecture Notes in Physics, vol 780. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00688-3_23
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DOI: https://doi.org/10.1007/978-3-642-00688-3_23
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