Initial magnetic field strength Binit generated by the small-scale dynamo (top panel) and the final magnetic field strength Bf generated by the α–Ω dynamo (middle panel) for a 105M⊙ star with an accretion rate of 10-1M⊙ yr-1. In the bottom panel, we show the orbital timescale, the growth time of the α–Ω dynamo, and the ordering timescale. The left panels show the atomic cooling regime in the inner parts of the disk, while the right panels show the H2 cooling regime on larger scales.
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