The Axisymmetric Pulsar Magnetosphere - a New Model

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Scientific paper

Relativistic acceleration and electron-positron pair production are supposed to occur deep within the light-cylinder, leading to an outflowing plasma stream consisting of highy primary electrons and a high-density sea of moderate-y pairs. The potential difference between the plasma and the star and the associated degree of sub-rotation are both quite modest. The assumption of strictly dissipation-free flow would lead to singularities in both the flow and the magnetic field, occurring a short distance beyond the light-cylinder. The quasi-steady model proposed necessarily has dissipation zones: one just beyond the light-cylinder and approximated as a thin cylinder within which E B is locally large, and the other as a dense equatorial disc, likely to suffer from spasmodic macroscopic instabilities. The proposed dissipative zone just beyond the light-cylinder could be the source of intense X- and gamma-ray emission. Key words: magnetic fields - MHD - pulsars: general - gamma-rays: theory.

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