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Proceedings Paper

Analysis of an inclined fast shock including pressure anisotropy
Author(s): Dieter F. Vogl; Nikolai V. Erkaev; Helfried K. Biernat; Helmet O. Rucker; Stefan Muehlbachler; Daniel Langmayr
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Paper Abstract

To study magnetosphere-ionosphere interactions, appropriate considerations on the solar wind, the bow shock, the magnetosheath, and the outer ionosphere are of importance. In this study, we concentrate on the analysis of an inclined fast shock including upstream and downstream pressure anisotropy and apply it to conditions at the Earth's bow shock. It is the main goal of this work to perform a parameter study of the magnetic field strength and plasma parameters downstream of an inclined fast shock as functions of upstream parameters and downstream pressure anisotropy. For closing the set of equations we use two threshold conditions of plasma instabilities as additional equations to bound the range of the pressure anisotropy, i.e., the criterion of the fire-hose instability and the criterion of the mirror instability. We found that the pressure anisotropy in the solar wind has a small influence on the changes of the relevant physical quantities across the shock wave. We further show that the variations of the plasma and field parameters are strongly influenced by the upstream Alfven Mach number and the angle between the normal vector of the discontinuity and the upstream magnetic field.

Paper Details

Date Published: 28 February 2002
PDF: 10 pages
Proc. SPIE 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, (28 February 2002); doi: 10.1117/12.458484
Show Author Affiliations
Dieter F. Vogl, Space Research Institute (Austria)
Nikolai V. Erkaev, Institute of Computational Modeling (Russia)
Helfried K. Biernat, Space Research Institute (Austria)
Univ. of Graz (Austria)
Helmet O. Rucker, Space Research Institute (Austria)
Univ. of Graz (Austria)
Stefan Muehlbachler, Space Research Institute (Austria)
Univ. of Graz (Austria)
Daniel Langmayr, Space Research Institute (Austria)
Univ. of Graz (Austria)


Published in SPIE Proceedings Vol. 4678:
Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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