Abstract
We present the numerical simulation of a single internal working surface which forms along the body of a supersonic jet with periodic variations in the magnitude of its velocity. The structure, the evolution and the observational properties of this flow are analysed. We make a qualitative comparison with previous analytic predictions, simulations of the complete jet and observations of Herbig-Haro jets. The apparent lag of the knots of emission with respect to the jet flow (which has been observed in some jets) can be explained by this model.

This publication has 0 references indexed in Scilit: