\begin{table}%t5
\caption{Gas density and magnetic field parameters adopted in the \mbox{simulations}.}
\label{simul}
\small%\centerline
{
\begin{tabular}{l l}
\hline
\hline 
 Grid size$^{a}$       & $1024^{3}$ pixels \\   
 Cellsize               & 1 pixel = 2 kpc \\
\hline
 Core radius          & $r_{\rm c}$ = 432 kpc         \\
 Central density      & $n_{\rm 0}$ = 2.05 $\times$ $10^{-3}$ cm$^{-3}$    \\
 Beta                 & $\beta$ = 0.74 \\ \hline
 Magnetic field model & $|B_k|^2\propto k^{-n}$ \\
 Magnetic field radial profile slope& $\mu=0.37$            \\
 Magnetic field minimum scale    & $\Lambda_{\rm min}$ = 4 kpc \\
 Magnetic field maximum scale    &  $\Lambda_{\rm max}$ = 512 kpc\\
 Central Mean magnetic field   & free parameter \\
 Power spectrum spectral index & free parameter ($n=2{-}4$)\\
\hline
\end{tabular}}
\medskip
$^a$ To extend simulated RM images up to the source~J1713.3+6347  the computational grid has been replicated at boundaries realizing a~field of view of 4096~$\times$ 4096~kpc$^2$.
\end{table}