\begin{table}%t5
\par
  \caption {\label{tab:alpha}Influence of the running of the synchrotron spectral index on component separation in term of goodness of fit and $r$ estimates for the EPIC-2m design.}
  %\centering
\par
$$
  \begin{array}{ccccc}
    \hline
    \hline
    r & \sigma_r & \alpha & r_{\rm est} & -\loglik \\%& \expect{\Phi} & \Phi/\expect{\Phi} \\
    \hline
    \multirow{3}{*}{$ 0.001 $} & \multirow{3}{*}{$ 1.8 \times 10^{-4} $}
    &0 & 9.78 \times 10^{-4} & 11.6 \\
    & &1 & 9.62 \times 10^{-4} & 11.5 \\
    & &3 & 1.06 \times 10^{-3} & 11.7 \\
    \hline
  \end{array}
  $$
\end{table}