Wave propagation in the magnetized cores of white dwarf stars with ultra-relativistic degenerate electrons

作者:Shukla P K*; Mendis D A; Krasheninnikov S I
来源:Journal of Plasma Physics, 2011, 77(5): 571-575.
DOI:10.1017/S0022377811000092

摘要

We discuss the dispersive properties of low-frequency electromagnetic (EM) perturbations in the magnetized core of self-gravitating white dwarf stars with ultra-relativistic degenerate electrons. For our purposes, we derive a dispersion relation by using the hydrodynamic equations for the ions under the action of EM and self-gravitating forces, and the inertialess electrons under the action of EM forces and the gradient of the ultra-relativistic pressure. The dispersion relation admits stability of a white dwarf star against a class of EM perturbations whose wavelengths are shorter than 15000 km.

  • 出版日期2011-10