Soliton turbulence in a strongly magnetized plasma Applications to the coherent radioemission of pulsars

Details Soliton turbulence in a strongly magnetized plasma Applications to the coherent radioemission of pulsars Soliton turbulence in a strongly magnetized plasma Applications to the coherent radioemission of pulsars

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ppcf...27...19v&link_type=abstract

Plasma Physics and Controlled Fusion (ISSN 0741-3335), vol. 27, Jan. 1985, p. 19-45.

Physics

Plasma Physics

10

Electron Plasma, Electrostatic Waves, Plasma Turbulence, Pulsars, Radio Emission, Solitary Waves, Beam Interactions, Coherent Radiation, Electromagnetic Radiation, Electron-Positron Plasmas, Magnetohydrodynamic Waves, Plasma Interactions, Positrons

Scientific paper

The generation and spectrum of soliton turbulence in the magnetospheric electron-positron plasma of pulsars is discussed. The modulational instability of Langmuir waves and soliton formation are studied taking into account the low frequency Alfven waves. Owing to ergodization via soliton interactions or soliton collapse, a power spectrum is found to be developed in the inertial range of turbulence. The power index is -2. The hierarchy of spatial scales has a breakdown around a length of 70 cm, which may be interpreted as the coherence length. These results are in close agreement with observed features of the pulsar radioemission. Mechanisms for the transformation of plasma turbulence into electromagnetic radiation are proposed. Specifically, the nonlinear amplification of Alfven waves is discussed. Also the emission resulting from the interaction of ultrarelativistic beams with the stochastic electric field of the solitons is studied.

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