The Stability of Attached Shock Waves in Magnetogasdynamic Flow Past a Wedge

The question of the physical significance of the new phenomenaindicated by Cabannes' work on magnetogasdynamic flow past awedge is considered from the point of view of the stabilityof the shock waves. Analytical and heuristic reasons are givensuggesting that downstream-facing shocks are stable if the upstreamflow is supersonic and unstable if it is subsonic, while upstreamfacing shocks are always to be considered unstable.