Simulations of the gravitational collapse of a 100 M_⊙ collapsing clump, with gas temperature T = 10 K, and Mach number . a) Model predictions for the strongly magnetised case, μ = 2. In the top panel, we show the direct outcome of the simulations, while the same image processed with the CASA simulator is shown in the bottom panel(first contour and step is 0.3 mJy beam⁻¹). b) Same as (a) for the weakly magnetised case, μ = 130.