Histograms showing the distribution of B_eq/B_dyn for all the particles distributed over the domain at a simulation time (t) of 1.04 Myr and 3.78 Myr. The vertical axis represents the normalised number of particles (N_p). A clear shift in the peak value of the histogram can be observed here as the galaxy ages. However, at 3.78 Myr the majority of particles show that the radio structure as a whole has achieved a near equipartition stage (B_eq ≈ B_dyn).