Analysis of an inclined fast shock including pressure anisotropy

Dieter F. Vogl; Nikolai V. Erkaev; Helfried K. Biernat; Helmet O. Rucker; Stefan Muehlbachler; Daniel Langmayr

doi:10.1117/12.458484

28 February 2002 Analysis of an inclined fast shock including pressure anisotropy

Dieter F. Vogl, Nikolai V. Erkaev, Helfried K. Biernat, Helmet O. Rucker, Stefan Muehlbachler, Daniel Langmayr

Proceedings Volume 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; (2002) https://doi.org/10.1117/12.458484
Event: Eighth Joint International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2001, Irkutsk, Russian Federation

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.

Citation Download Citation

Dieter F. Vogl, Nikolai V. Erkaev, Helfried K. Biernat, Helmet O. Rucker, Stefan Muehlbachler, and Daniel Langmayr "Analysis of an inclined fast shock including pressure anisotropy", Proc. SPIE 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, (28 February 2002); https://doi.org/10.1117/12.458484

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KEYWORDS

Plasma

Magnetism

Anisotropy

Solar processes

Mirrors

Ions

Space operations

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