Propagation of arbitrary-amplitude ion waves in relativistically degenerate electron-ion plasmas

Details Propagation of arbitrary-amplitude ion waves in relativistically degenerate electron-ion plasmas Propagation of arbitrary-amplitude ion waves in relativistically degenerate electron-ion plasmas

2010-09-27

arxiv.org/abs/1009.5214v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted for publication in Astrophysics & Space Science (14 Pages and 3 Figures)

Scientific paper

We employ the Sagdeev pseudo-potential method to investigate the propagation of nonlinear ion waves in a relativistically degenerate electron-ion plasmas. The matching criteria for existence of such nonlinear excitations are numerically investigated in terms of the relativity measure (relativistic degeneracy parameter) of electrons and the allowed Mach-number range for propagation of such waves is evaluated. It is shown that the electron relativistic degeneracy parameter has significant effects on nonlinear wave dynamics in superdense degenerate plasmas such as that encountered in white dwarfs and the cores of massive planets.

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