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Fig. 3

image

Gas density plots of the KHI in 2D and 2.5D after the end of the linear phase. The density units are in g cm-3. In all figures the entire domain (0.33 pc × 0.33 pc) is shown. Left: a 2D simulation of the KHI in HD with dust and an artificial magnetic pressure term pM added to the total pressure at t = 0.007 (6.84 × 104 yr). Centre: the same setup, but in 2.5D MHD with a magnetic field perpendicular to the plane, also at t = 0.007. Right: a 2D HD simulation without the effect of a magnetic field added into the total gas pressure, at t = 0.02 (1.95 × 105 yr). Note this figure is taken at a different time as the linear phase end later in this case.

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