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Fig. 5.

Snapshots of the small-scale helicity ℋ at the north pole (θ = 0°, left) and mid-latitudes (θ = 45°, right) for fast rotation. As expected, the helicity vanishes in the middle of the box. The applied magnetic field is B = (0, 0.1, 10), Ω = 10, Pr = 0.1, and Pm = 0.1.
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