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Jim Fuller edited subsection_Local_Analysis_The_properties__.tex
almost 9 years ago
Commit id: 44be936501a730bd85bbf3ee7f8b958fd2b386d0
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\subsection{Local Analysis}
The properties of magnetohydrodynamic waves in red giant cores can be understood using a local (WKB) analysis for high wavenumbers ${\bf k}$, in which $k r \gg 1$ and $k H \gg
1$. 1$ (where $H$ is a pressure scale height). We show below the WKB limit is always a good approximation in our stellar models.
In the adiabatic, anelastic, and ideal MHD approximations, the local dispersion relation for MHD waves is \citep{unno:89}
\begin{equation}