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Jim Fuller edited subsection_Mode_Visibility_Here_we__.tex
almost 9 years ago
Commit id: 506bd627b7cce21c0885ef2b2aaa38ff94838d30
deletions | additions
diff --git a/subsection_Mode_Visibility_Here_we__.tex b/subsection_Mode_Visibility_Here_we__.tex
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The energy of a mode within the envelope is proportional to its surface amplitude squared, hence, the visibility of a mode scales as $V_{\alpha} \propto E_{\alpha,{\rm ac}}$. Then the ratio of the visibility of the suppressed mode to that of the normal mode is
\begin{equation}
\frac{V_{\rm
sup}^2}{V_\alpha^2} sup}^2}{V_{\rm norm}^2} = \frac{E_{\rm ac}}{E_{\alpha,{\rm ac}}} \, .
\end{equation}
Then equation \ref{eqn:ebalance} leads to
\begin{equation}
\frac{V_{\rm
sup}^2}{V_\alpha^2} sup}^2}{V_{\rm norm}^2} = \frac{\gamma_{\rm ac}}{\gamma_{\rm ac} + T^2/(2 t_{\rm cross})} \, .
\end{equation}
Using the fact that the large frequency separation is $\Delta \nu \simeq (2 t_{\rm cross})^{-1}$ \citep{Chaplin_2013} and defining
$\tau_{\rm ac} $\tau_0 = \gamma_{\rm ac}^{-1}$, we have our final result:
\begin{equation}
\frac{V_{\rm
sup}^2}{V_\alpha^2} sup}^2}{V_{\rm norm}^2} = \bigg[1 + \Delta \nu
\tau_{\rm ac} \tau_0 T^2 \bigg]^{-1} \, .
\end{equation}