Waves in low-beta plasmas - Slow shocks

Details Waves in low-beta plasmas - Slow shocks Waves in low-beta plasmas - Slow shocks

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.1222s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Feb. 1, 1989, p. 1222-1234.

Computer Science

Sound

21

Plasma Waves, Shock Waves, Solar Corona, Stellar Mass Ejection, Wave Generation, Beta Factor, Current Sheets, Nonlinear Equations, Solar Magnetic Field, Wave Propagation

Scientific paper

Results from wave theory and numerical simulation of the nonlinear MHD equations are used to study the response of a conducting fluid containing an embedded magnetic field with beta less than 1 to the sudden injection of material along the field lines. It is shown that the injection produces slow shocks with configurations which are concave toward the ejecta driver. Fast-mode waves which have not steepened into the shock precede the slow shock and alter the ambient medium. When beta equals 0.1, the fast mode becomes a transverse wave for parallel propagation, while the slow wave approaches a longitudinal, or sound, wave.

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