Relaxation of a quasisymmetric rotating plasma: A model of Jupiter's magnetosphere

Details Relaxation of a quasisymmetric rotating plasma: A model of Jupiter's magnetosphere Relaxation of a quasisymmetric rotating plasma: A model of Jupiter's magnetosphere

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005phpl...12i2901s&link_type=abstract

Physics of Plasmas, Volume 12, Issue 9, pp. 092901-092901-5 (2005).

Physics

7

Jupiter, Magnetohydrodynamics, Calculus Of Variations

Scientific paper

A variational principle that uses the energy as the target functional under some constraints explains the creation of the relaxed state with a rigid-rotation flow confining a high-beta plasma. The constraints are due to the conservation of the magnetic and cross helicities, the total mechanical angular momentum, and the total magnetic flux (equivalently, the total canonical angular momentum). The constancy of the total canonical angular momentum holds when the quasiaxisymmetry of magnetic and flow fields is maintained through the relaxation process, which imposes a limitation for the dynamics leading to the creation of such a structure. The model has been applied to Jupiter's magnetosphere.

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