Oblique solitary Alfvén modes in relativistic electron-positron plasmas

Details Oblique solitary Alfvén modes in relativistic electron-positron plasmas Oblique solitary Alfvén modes in relativistic electron-positron plasmas

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap%26ss.240..215v&link_type=abstract

Astrophysics and Space Science, Volume 240, Issue 2, pp.215-224

Astronomy and Astrophysics

Astrophysics

10

Scientific paper

In electron-positron plasmas the charge-to-mass ratio is the same for both species. This leads for different waves to the vanishing of certain coefficients in the dispersion laws and nonlinear evolution equations, and also to the decoupling of some of the plasma modes. In particular, there is a low-frequency mode which exists at all angles of propagation with respect to the static magnetic field, corresponding at parallel propagation to a degenerate case of circularly polarized waves, and at perpendicular propagation to part of the extraordinary mode. The nonlinear evolution of this generalizedX-mode is governed by a Korteweg-de Vries equation, valid at all angles of propagation except strictly parallel propagation, for which a different approach had been given already. The nonlinearity is strongest at perpendicular propagation.

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