Force-free foliations

Geoffrey Compère, Samuel E. Gralla, Alexandru Lupsasca

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Electromagnetic field configurations with vanishing Lorentz force density are known as force-free and appear in terrestrial, space, and astrophysical plasmas. We explore a general method for finding such configurations based on formulating equations for the field lines rather than the field itself. The basic object becomes a foliation of spacetime or, in the stationary axisymmetric case, of the half-plane. We use this approach to find some new stationary and axisymmetric solutions, one of which could represent a rotating plasma vortex near a magnetic null point.

Original languageEnglish (US)
Article number124012
JournalPhysical Review D
Issue number12
StatePublished - Dec 8 2016

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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