Investigation of macroscopic instabilities at the heliopause boundary surface

Details Investigation of macroscopic instabilities at the heliopause boundary surface Investigation of macroscopic instabilities at the heliopause boundary surface

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...261..341b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 261, no. 1, p. 341-347.

Astronomy and Astrophysics

Astrophysics

25

Cosmic Plasma, Magnetohydrodynamic Flow, Plasma Interactions, Solar Wind, Heliosphere, Hydrogen, Kelvin-Helmholtz Instability, Perturbation, Plasma Turbulence, Stagnation Point

Scientific paper

The stability properties of the heliopause boundary surface subjected to hydrodynamical perturbations is investigated. It is shown that the problem of stability has a different quality in the nose region and in the flanks of the heliopause, and, for the latter regions, the general forms of Kelvin-Helmholtz instabilities for the prevailing transition conditions are investigated. It is found that, within a critical angle of perturbation wavevector with respect to the local velocity vector at the heliopause, instability can always be expected with decreasing increments for a decreasing ratio of densities on the solar and on the interstellar side of the heliopause, respectively.

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