Propagation Of Shock Waves In Inhomogeneous Gases .6. Oblique Hydromagnetic Shock Propagation

The propagation of a hydromagnetic fast shock in a gravitational atmosphere permeated by a uniform magnetic field is studied by means of generalized ChisneU:smethod. It is show1.l that the fast shock propagating upwards always refracts away. from the vertical irrespective of the direction ,of the magnetic field and the degree of refraction is higher when the ratio of the sound velocity to the Alfven velocity along the magnetic field is smaller than unity. It is also shown that slow w:aves travelling upwards and downwards are generated in the fast-shock propagation through the atmosphere of declining density. The relation between these results and the heating of the solar corona is discussed.