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Published online by Cambridge University Press: 14 August 2015
The three-dimensional structure of a pulsar magnetosphere is hard to calculate. Instead we start with a two-dimensional model (Kahn, 1971). It consists of a vacuum electromagnetic field generated by a line of rotating dipoles, from −∞ to +∞, perpendicular to the rotation axis. This field resembles that in the equatorial plane of a rotating dipole aligned perpendicular to its rotation axis. In both cases the electric field E is perpendicular to the magnetic induction B.