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Model Calculations of Solar Wind Expansion Including an Enhanced Fraction of Ionizing Electrons

Published online by Cambridge University Press:  14 August 2015

E. F. Petelski ,
H. J. Fahr  and
H. W. Ripken
E. F. Petelski
Affiliation:
Institut für Astrophysik und Extraterrestrische Forschung, Universität Bonn, Auf dem Hügel 71 D-53 Bonn, W. Germany
H. J. Fahr
Affiliation:
Institut für Astrophysik und Extraterrestrische Forschung, Universität Bonn, Auf dem Hügel 71 D-53 Bonn, W. Germany
H. W. Ripken
Affiliation:
Institut für Astrophysik und Extraterrestrische Forschung, Universität Bonn, Auf dem Hügel 71 D-53 Bonn, W. Germany

Abstract

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Collective interactions of the solar wind and newly ionized interstellar gas cause turbulent electron heating to ionizing energies analogous to laboratory experiments on the critical ionization velocity effect. Implications for solar wind and interstellar gas dynamics are calculated by simultaneously solving continuity equations for solar wind protons, interstellar hydrogen atoms, and energetic electrons. Electron impact ionization is shown to be practically as important as photoionization, giving rise to a stronger deceleration and heating of the distant solar wind, a weaker terminating shock, a smaller stand-off distance of the helio pause, and implying higher densities of the outer solar wind and the interstellar neutral gas.

Type
Part II. Coronal and Interplanetary Responses to Long Time Scale Phenomena
Information
Symposium - International Astronomical Union , Volume 91: Solar and Interplanetary Dynamics , 1980 , pp. 159 - 162
Copyright
Copyright © Reidel 1980 

References

Danielsson, L.: 1973, Astrophys. Space Sci. 24, pp. 459–485.CrossRefGoogle Scholar
Himmel, G., Möbius, E., and Piel, A.: 1976, Z. Naturforsch. 31a, pp. 934–941.CrossRefGoogle Scholar
Lindeman, R.A., Vondrak, R.R., Freeman, J.W., and Snyder, C. W.: 1974, Geophys. Res. 79, pp. 2287–2296.CrossRefGoogle Scholar
Petelski, E.F., Fahr, H.J., Ripken, H.W., Brenning, N., and Axnäs, I.: 1979, Astron. Astrophys. (submitted).Google Scholar