Fig. 1

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Temperature (panels a and b) and gas density (panels c and d) maps for the model MREF in the initial configuration at t = t0 and at the end of the quiescent phase, shortly before the TI is triggered, t = tTI − ∆t. Yellow contour lines depict the region of dust sublimation (T = Ts), black lines show the ionisation transition from the MRI active zone to the dead zone (T = TMRI), and green lines mark the radial optical depth τ, = 2/3 surface. In panels c and d, the red contours are drawn at ρgas = 10−9 which corresponds to a dust density of ρdust = 10−12.
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