Approximate Equilibrium and Local Stability of the Earth's Magnetotail.

Details Approximate Equilibrium and Local Stability of the Earth's Magnetotail. Approximate Equilibrium and Local Stability of the Earth's Magnetotail.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phdt.........5y&link_type=abstract

Thesis (PH.D.)--NEW YORK UNIVERSITY, 1995.Source: Dissertation Abstracts International, Volume: 56-10, Section: B, page: 5543.

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Scientific paper

Approximate equilibrium solutions for the earth's magnetic tail are constructed. They contain plasma flow along the magnetic field lines as is seen in various observations. In the two-dimensional case, the flow occurs in a narrow layer modeling the plasma sheet boundary layer, and examples of both open and closed magnetospheres are shown. Also described are examples of finite-size compressible plasmoids traveling down the magnetotail. The three-dimensional case is developed with an example given. The local (ballooning) stability of the magnetotail is examined by investigating a special case of approximate equilibrium with parallel super-Alfvenic flow. Previously, others showed that the sub-Alfvenic flow case is exponentially unstable for a range of parameter values. Surprisingly, in the super -Alfven case, instability (when it occurs) is found to only grow algebraically in time.

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