Left: line integral convolution visualisation of the entropy behaviour indicating the presence of eddies within the second core. Shown here is the inner 0.5 au of the 3000 au collapsing 1 M_⊙ cloud core at 312 years after the formation of the second core. Right: radial entropy profile for the 1 M_⊙ case, within the inner 1.0 au of the 3000 au collapsing cloud core at 312 years after the formation of the second core. The vertical grey dashed line indicates the radius of the second core. The colour gradient from light to dark blue spans the polar angle from the midplane (θ = 90°) to the pole (θ = 0°). The dashed red line shows the radial profile from the 1D collapse simulation for the same initial conditions and resolution, which by definition omits the effect of convection.