deletions | additions       diff --git a/scattering part4.tex b/scattering part4.tex  index 8884664..d769f94 100644  --- a/scattering part4.tex  +++ b/scattering part4.tex 
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By rearranging equation \ref{eqn:best_case_scattering} we can determine the limiting DM (DM$_{\rm limit}$) above which it is no longer possible to achieve a given timing resolution ($t_{\rm res}$) due to scattering:  \begin{equation}  \label{eqn:limiting_dm}  \log_{10}{\rm DM_{\rm limit}}(\nu,t_{\rm res}) = \frac{1}{2.14}(-0.154 + \sqrt{0.0247 + 4.28(13.46+3.86\log_{10}{\nu}+\log_{10}{t_{\rm res}})}.  \end{equation}  Here $t_{\rm res}$ has units of seconds and $\nu$ has units of GHz. Figure \ref{fig:crossover_dm} shows the limiting DM for 200 ns timing resolution for all SKA observing frequencies. 
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