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Axisymmetric self-consistent model of the solar wind interaction with the LISM: Basic results and possible ways of development

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Abstract

We analyze the main results of the axisymmetric self-consistent model of the solar wind (SW) and supersonic local interstellar medium (LISM) interaction proposed by Baranov and Malama (1993, hereafter BM93, 1995) for an interstellar flow assumed to be composed of protons, electrons and hydrogen atoms. Here, in addition to the resonant charge exchange we also take into account the photoionization and the ionization by electron impact. The characteristics of the plasma in the interface region and inside the heliosphere depend strongly on the ionization degree of the LISM. The distribution function of the H atoms which penetrate the solar system from the LISM is non-Maxwellian, which implies that a pure hydrodynamic description of their motion is not appropriate. The H atom number density is a non-monotonic function of the heliocentric distance and the existence of a “hydrogen wall” in the vicinity of the heliopause is important for the interpretation of solar Lyman-alpha scattering experiments.

The influence of the interface plasma structure on the interstellar oxygen penetration into the solar system is also illustrated. Possible ways of development of the model are analyzed.

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Authors and Affiliations

  1. Institute for Problems in Mechanics, Russian Academy of Science, Prospect Vernadskogo 101, 117526, Moscow, Russia

    V. B. Baranov & Yu. G. Malama

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  1. V. B. Baranov
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  2. Yu. G. Malama
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Baranov, V.B., Malama, Y.G. Axisymmetric self-consistent model of the solar wind interaction with the LISM: Basic results and possible ways of development. Space Sci Rev 78, 305–316 (1996). https://doi.org/10.1007/BF00170817

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