Physics – Optics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..91..289v&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 91, no. 2, April 1983, p. 289-297.
Physics
Optics
Atmospheric Physics, Geometrical Optics, Magnetoacoustic Waves, Magnetohydrodynamic Waves, Wave Propagation, Anisotropic Media, Magnetic Effects, Propagation Velocity, Shock Waves
Scientific paper
The theory of singular surfaces and the method of geometrical optics provided by Luneberg (1964) are used to study the anisotropic magnetogasdynamic wave propagation of weak discontinuities through a conducting and radiating atmosphere. The atmospheric medium is assumed to be optically thick, and first and second order compatibility conditions are used. It is concluded that the velocity of propagation of a sonic wave is proportional to the Alfven velocity, and that the constant of proportionality depends on the radiation pressure. The velocity of sonic discontinuity changes according to the strength of the magnetic field, and the magnetic field causes rapid termination of the sonic wave into a shock wave.
Khan Hamid Ahmad
Srivastava R. C.
Verma B. G.
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