Comparison of the computed value of |$ J_{N}(\theta,t) $| from (4.3) at times |$ t=1,2,4 $| (solid line, dashed line, line and symbols) for (a) |$ \epsilon=0.1 $| and (b) |$ \epsilon=0.01 $| with the steady core solution |$ {\widehat{J}}(\theta) $| (symbols) from (3.6) with |$ c=0.0451 $|⁠.