Relativistic solitons and pulsars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Pulsars, Radio Emission, Relativistic Plasmas, Solitary Waves, Stellar Radiation, Astronomical Models, Electric Fields, Electron Bunching, Magnetic Fields, Particle Collisions, Polarization Characteristics, Wentzel-Kramer-Brillouin Method

Scientific paper

A production mechanism for stable electron bunches or sheets of localized electric fields is investigated which may account for pulsar radio emission. Possible soliton phenomena in a one-dimensional relativistic plasma are analyzed, and it is suggested that the motion of a relativistic soliton, or 'relaton', along a curved magnetic-field line may produce radio emission with the correct polarization properties. A general MHD solution is obtained for relatons, the radiation produced by a relativistic particle colliding with a soliton is evaluated, and the emission by a soliton moving along a curved field line is estimated. It is noted that due to a number of severe physical restrictions, curvature radiation is not a very likely solution to the problem of pulsar radio emission.

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