Nonevolutionary MHD shocks in the solar wind and interstellar medium interaction

We present the study of the solar wind interaction with the super-Alfvenic magnetized interstellar medium in the controversial case when fast magnetos onic shocks are nonevolutionary, while admissible switch-on shocks cannot e xist due to geometrical reasons. The flow behaviour and the accompanying sh ock 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 MI-ID shoc ks are discussed.