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Astron. Astrophys. 354, 697-702 (2000)


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Nonevolutionary MHD shocks in the solar wind and interstellar medium interaction

N.V. Pogorelov  * and T. Matsuda

Department of Earth and Planetary Sciences, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan

Received 28 May 1999 / Accepted 29 September 1999

Abstract

We present the study of the solar wind interaction with the super-Alfvénic magnetized interstellar medium in the controversial case when fast magnetosonic shocks are nonevolutionary, while admissible switch-on shocks cannot exist due to geometrical reasons. The flow behaviour and the accompanying shock configuration are investigated both in the two-dimensional axisymmetric and 2.5-dimensional, that is, permitting rotation around the symmetry axis, statements. General questions of the origin of nonevolutionary MHD shocks are discussed.

Key words: Magnetohydrodynamics (MHD) – shock waves – Sun: solar wind – ISM: kinematics and dynamics

* Current affiliation: Institute for Problems in Mechanics, Russian Academy of Sciences, 101 Vernadskii Avenue, 117526 Moscow, Russia (pgrlv@ipmnet.ru)

Send offprint requests to: N.V. Pogorelov

© European Southern Observatory (ESO) 2000

Online publication: February 9, 2000

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