Generation of a magnetic field by sound oscillations in the solar atmosphere

Details Generation of a magnetic field by sound oscillations in the solar atmosphere Generation of a magnetic field by sound oscillations in the solar atmosphere

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989zhetf..96.1708r&link_type=abstract

Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki (ISSN 0044-4510), vol. 96, Nov. 1989, p. 1708-1713. In Russian.

Computer Science

Sound

3

Solar Atmosphere, Solar Magnetic Field, Solar Oscillations, Sound Waves, Chromosphere, Energy Dissipation, Shock Waves, Solar Corona, Thermal Conductivity, Wave Propagation

Scientific paper

It is shown that sound waves emitted from the convective zone of the sun excite an electric current (and magnetic field) in the transition region between the chromosphere and corona. Excitation of the current is due to absorption of part of the wave momentum by electrons as a consequence of the electron thermal conductivity effect. As the sound waves propagate towards regions of lower density the wave front steepens, which leads to the formation of weak shock waves and (due to rapid dissipation of energy at the wave front) to more intense magnetic field generation.

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