Abstract
The Magnetosphere-Solar Wind boundary is treated as a tangential discontinuity between collisionless plasma described by C.G.L. equations. An estimate is made, analytically, of the minimum shear speed required to render the interface unstable for propagation in any arbitrary direction. It is found that even systems, which are, for all shear speeds, stable towards propagation parallel to the field, are rendered unstable by propagation away from the field, in some velocity domain. Numerical evaluations for parameters characteristic of the Solar wind-Magnetosphere boundary show that the interface could be unstable even under relatively quiet conditions.
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References
Axford, W. I. and Hines, C. O.: 1961,Can. J. Phys. 39, 1433.
Burlaga, L. F.: 1969,Solar Phys. 7, 72.
Dungey, J. W. and Southwood, D. J.: 1970,Space Sci. Rev. 10, 672.
Duhau, S., Gratton, F., and Gratton, J.: 1970,Phys. Fluids 13, 1503.
Kalra, G. L.: 1973, in J. N. Tandon (ed.),Solar Radiations and the Earth, Hindustan Publishing Corp. India, p. 251.
Kalra, G. L., Rajaram, Ramaswamy, and Tandon, J. N.: 1972,Astrophys. Space Sci. 17, 87.
Kaufman, R. L. and Konradi, A.: 1969,J. Geophys. Res. 74, 3609.
Kovalevsky, J. V.: 1971,Space Sci. Rev. 12, 87.
McKenzie, J. F.: 1970,Planet. Space Sci. 13, 1.
Rajaram, Ramaswamy, Kalra, G. L., and Tandon, J. N.: 1973a,J. Atmos. Terr. Phys. 35, 2069.
Rajaram, Ramaswamy, Kalra, G. L., and Tandon, J. N.: 1973b,J. Plasma Phys. 9, 249.
Rajaram, Ramaswamy, Kalra, G. L., and Tandon, J. N.: 1974,Astrophys. Space Sci. 31, 143.
Southwood, D. J.: 1968,Planet. Space Sci. 16, 587.
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Kalra, G.L., Tandon, J.N. & Rajaram, R. Stability of the magnetopause. Astrophys Space Sci 43, 433–448 (1976). https://doi.org/10.1007/BF00640020
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DOI: https://doi.org/10.1007/BF00640020