Numerical simulations of a magnetically confined jet

Preliminary results of two-dimensional, axisymmetric numerical simulations of a propagating jet which possesses a dominating toroidal magnetic field are presented. Unlike its pure hydrodynamical (HD) counterpart, the magnetohydrodynamical (MHD) jet presented here possesses no substantial backflowing cocoon. Rather, most of the material is collected between the HD working surface (terminal Mach disk) and the leading bow shock, forming what is called a nose cone. The nature of the nose cone and other features peculiar to this jet are discussed, along with possible observational implications. 18 references