Equatorial propagation of axisymmetric magnetohydrodynamic shocks. II

Details Equatorial propagation of axisymmetric magnetohydrodynamic shocks. II Equatorial propagation of axisymmetric magnetohydrodynamic shocks. II

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phfl...20.1097r&link_type=abstract

Physics of Fluids, vol. 20, July 1977, p. 1097-1103.

Physics

Nuclear Physics

9

Axisymmetric Flow, Gravitational Effects, Magnetic Effects, Magnetic Equator, Magnetohydrodynamic Flow, Shock Wave Propagation, Gas Flow, Geomagnetism, Gravitational Fields, Heavy Elements, Nuclei (Nuclear Physics), Piston Theory, Solar Wind

Scientific paper

The paper presents self-similar solutions for the equatorial propagation of axisymmetric, piston-driven magnetohydrodynamic shocks into an inhomogeneous ideal gas permeated by an azimuthal magnetic field. Several regimes of magnetically dominated flow near the piston are possible (depending on the ambient density and field distribution of the unshocked gas) along with a new quasi-hydrodynamic flow where the magnetic field is depressed near the piston. Since in each regime gradients of different quantities diverge, the results indicate that in each case different effects of dissipation and diffusion may be needed. The theory is applied to describe shock waves in a gravitational field due to a heavy nucleus at the origin.

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