Electrostatic shear flow instability of relativistic nonneutral beams in pulsars

Details Electrostatic shear flow instability of relativistic nonneutral beams in pulsars Electrostatic shear flow instability of relativistic nonneutral beams in pulsars

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229..728a&link_type=abstract

Astrophysical Journal, Part 1, vol. 229, Apr. 15, 1979, p. 728-733.

Statistics

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17

Electrostatic Waves, Magnetohydrodynamic Stability, Particle Beams, Pulsars, Relativistic Plasmas, Shear Flow, Electric Fields, Helical Flow, Perturbation Theory, Plasma Density

Scientific paper

The electrostatic instability of a simple example of a relativistic nonneutral shear flow along a strong magnetic field is analyzed. The equation that governs the electrostatic potential of charge-density perturbations in the nonneutral flow is derived in the case where the perturbation wavelength along the magnetic field is small in comparison with the magnitude of the gradients of the equilibrium flow parallel to the field. A necessary condition for instability is obtained, along with a local dispersion relation that illustrates the sufficient conditions. The physical mechanism of the instability is discussed, and possible applications to pulsars are considered.

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