Double-layer disk and magnetic field dynamics in the Crab Nebula

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Crab Nebula, Interplanetary Magnetic Fields, Stellar Winds, Dynamo Theory, Electron Plasma, Magnetic Field Configurations, Pulsars, Relativistic Particles, Stellar Magnetospheres, Stellar Rotation

Scientific paper

The mechanism of the large-scale magnetic field generation in the Crab Nebula is proposed. The basis for the considered 'fast' mechanism is the model of the central region of Crab Nebula amorphous part having the form of slightly divergent double-layer disk consisting of the relativistic electron-positron plasma. The nebula toroidal magnetic field generation occurs in the double-layer disk in the immediate neighbourhood of the light cylinder of pulsar PSR 0531+21 due to the differential rotation by means of dynamo-mechanism. The generated field is transferred into the nebula by the pulsar wind which forms the double-layer disk.

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