FIG. 5.

The impact of mobilities. (a) ${\lambda }_{\max }$ shown in $D_S\text{-}C$ space, where the boundary line separates the regions with (${\lambda }_{\max }>0$) and without (${\lambda }_{\max }=0$) pattern formation. $D_I=1$ fixed. (b) Boundaries for a couple of $D_I$; the left sides are regions allowing patterns. Parameter: $R_0=2$.