Fig. 1

a) Representative magnetic field lines for the spine model with parameters λ = 0.75, Bs = 3.4, α = −2, η = 3 × 10-3. The field lines are seeded from the top and base of the spine axis. b) Showing the direction and relative strength of the current in a plane of constant z for the same parameters. Here, is the size of the resistive region centred on the spine axis.
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