Abstract
Having previously treated the problem of the Lorentz transformation properties of static field lines around magnetic neutral points, it is time to explore the properties of dynamic nulls. We discuss the relativistic motion of magnetic nulls accounting for both the linear and the second order structure of the magnetic field. It is found that the dynamics of a magnetic null is given by a world line trajectory of the null point and the changing fieldline structure. The dynamics of magnetic null structure is also explored, showing the significance of both the null structure and the flow pattern. We describe relativistic transformation properties of the appearance and annihilation of magnetic nulls, where the previously proposed null region is used as an invariant identification of topological transition and bifurcation processes.
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