Stability in Force-Free Electrodynamics

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dc.creatorGruzinov, Andrei
dc.date1999-02-19
dc.date.accessioned2026-07-07T02:30:32Z
dc.date.available2026-07-07T02:30:32Z
dc.descriptionWe 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 region exceeds the charge density times the speed of light. This may be the process that determines the pulsar luminosity.
dc.description8 pages, submitted to ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/9902288
dc.identifierhttp://arxiv.org/abs/astro-ph/9902288
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13847
dc.subjectAstrophysics
dc.titleStability in Force-Free Electrodynamics
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