On the role of finite inertia and resistivity in axisymmetric pulsar magnetospheres

Astronomy and Astrophysics – Astronomy

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Electrical Resistivity, Inertia, Plasma Density, Pulsar Magnetospheres, Pulsars, Stellar Models, Particle Motion, Plasma Dynamics, Stellar Atmospheres, Stellar Magnetic Fields

Scientific paper

Charge-separated and quasineutral-plasma models of axisymmetric pulsar magnetospheres are examined in a study of inertial and resistivity effects as a function of the plasma density. In the quasineutral-plasma model, the plasma inertia remains small throughout the open field region; to prevent separation of the two charge species in the stellar gravity field, an anomalous resistivity implying nonvanishing poloidal flow must be assumed. In the steady charge-separated magnetosphere, charge conservation is satisfied by inclusion of particle inertia and/or radiation reaction effects in the momentum equation and/or its divergence. Motions of the polar and equatorial charge species are also assessed.

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