Generation of slow-mode waves in front of the dayside magnetopause

Details Generation of slow-mode waves in front of the dayside magnetopause Generation of slow-mode waves in front of the dayside magnetopause

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21..629y&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 7, p. 629-632

Physics

21

Interplanetary Magnetic Fields, Magnetohydrodynamic Waves, Magnetopause, Shock Waves, Solar Wind, Wave Propagation, Geomagnetism, Plasma Density, Solar Terrestrial Interactions, Two Dimensional Models, Wave Interaction

Scientific paper

Slow-mode waves have been observed to appear frequently in front of the dayside magnetopause. It is found based on two-dimensional global magnetohydrodynamic (MHD) simulations that slow-mode waves are generated through the interaction between the bow shock and various MHD waves (fast-mode, Alfven-mode, or slow-mode waves) in the upstream solar wind. The generated slow-mode waves stay in front of the magnetopause for a long time (over 15 minutes) before the wave energy is convected away tailward. Since various waves are often present in the solar wind, this mechanism may lead to the frequent appearance of slow-mode waves in front of the magnetopause.

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