All Tables

Table 1: of results with magnetic diffusivity $\eta$ independent of z(i.e., $\eta _1=1$ ), $R_\alpha =-1.85$ , $R_\omega =185$ , R_u=0.64, $\alpha _{\rm SS}=0.01$ , ${\cal P}=1$ , and $\lambda =0.43$ . $E_{\rm t}$ and $E_{\rm d}$ are the field energies in the whole computational domain and near the disc respectively (see text), s=E_P/E_Tis the ratio of energies in the poloidal and toroidal magnetic field in the whole domain, and F₀ is the signed flux through the disc plane in $r\le 1$ . The final entry (asterisked) has $R_\alpha =0$ , and refers to a purely advective calculation, with no dynamo action.
Table 2: Table 1, but with enhanced and reduced coronal diffusivities ( $\eta _1=3$ and 0.3). The asterisked entries have $R_\alpha =0$ , and refer to purely advective calculations, with no dynamo action.
Table 3: of results with a smaller disc ( $R=10^{14}~{\rm cm}$ ), else as for Table 1. F₀ is the signed flux through the disc plane in $r\le 1$ (corresponding to 10¹⁴ cm) and $B_{\rm ext}^{(14)}$ is the dimensionless strength of the external field, but now measured in the units of $k^{1/2}B_{\rm eq}$ at that radius.