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Jim Fuller edited section_Magneto_Gravity_Waves_In__.tex
about 9 years ago
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diff --git a/section_Magneto_Gravity_Waves_In__.tex b/section_Magneto_Gravity_Waves_In__.tex
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\omega_{MG} = \sqrt{2 v_A N k_\perp} \, .
\end{equation}
In a magnetized red giant core, the value of both $N$ and $v_A$ will
typically increase from the exterior of the radiative zone
inward. Incoming gravity waves become increasingly Alfvenic magneto-gravity waves as they propagate inward toward the
helium core. If the hydrogen burning shell (see Figure \ref{fig:Prop}). For stars with magnetic field
strength becomes strengths large enough to satisfy equation
\ref{eqn:magnetogravity2}, \ref{eqn:vamin}, the waves
are very strongly altered by the hit a magnetic
field. They wall where $\omega=\omega_{\rm MG}$. Here, they may either reflect
(i.e., they become evanescent as in equation \ref{eqn:magnetodisp3}), or
they may transform be transmitted into
purely the strongly mangnetized region as Alfven waves.
Both processes are likely to occur for an arbitrary In either case, the effect of the strong magnetic field
geometry. is to prevent the gravity wave ever traveling back toward the surface of the star.
\subsection{Magnetic Greenhouse Effect}