Stability in Force-free Electrodynamics

  title={Stability in Force-free Electrodynamics},
  author={Andrei V. Gruzinov}
We show that flows of pure electromagnetic energy are subject to instabilities familiar from hydrodynamics and plasma physics—Kelvin-Helmholtz and screw instabilities. In the framework of force-free electrodynamics, it is found that electric-like tangential discontinuities are Kelvin-Helmholtz-unstable. All non-trivial cylindrically symmetrical magnetic configurations are screw-unstable. The Poynting jet of the Goldreich-Julian pulsar is screw-unstable if the current density in the polar cap… CONTINUE READING

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Phys. Rev. D57

  • C Thompson, O Blaes
  • Phys. Rev. D57
  • 1998
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