J. Geophys. Res., in press (2000) 


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Self-consistent model of the solar wind interaction with two component circumsolar interstellar cloud: Mutual influence of thermal plasma and galactic cosmic rays

A. V. Myasnikov 1, V. Izmodenov 2 , S. V. Chalov 1 and D. B. Alexashov 1

1 Institute for Problems in Mechanics, Russian Academy of Sciences, Prospect Vernadskogo 101, Moskow 117526, Russia
2 Moscow State University, Department of Mechanics and Mathematics, Aeromechanic division, Moscow 199899, Russia

Received April 7 1999 / Accepted November 24 1999

Abstract

The interaction of the solar wind with the two-component interstellar medium consisting of thermal plasma
and galactic cosmic rays is studied numerically using a soft fitting technique based on the high-resolution Godunov scheme and the physical process splitting method. Mutual influence of plasma and cosmic ray components on the solar wind termination is considered. It is shown that cosmic rays can considerably modify the shape and structure of the solar wind termination shock and the bow shock, and chang the positions of the heliopause and bow shock if no H atoms are taken into account. 

Key words: heliospheric interface -- galactic cosmic rays -- interstellar plasma -- solar wind