Magnetoacoustic Waves in the Solar Stratified Atmosphere

Details Magnetoacoustic Waves in the Solar Stratified Atmosphere Magnetoacoustic Waves in the Solar Stratified Atmosphere

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001chphl..18.1624z&link_type=abstract

Chinese Physics Letters, Volume 18, Issue 12, pp. 1624-1627 (2001).

Physics

3

Scientific paper

The propagation of magnetoacoustic waves in the solar atmosphere consisting of the photosphere, chromosphere and corona has been studied numerically by time-dependent multi-dimensional magnetohydrodynamic (MHD) simulation. Pressure disturbances are introduced at the bottom of the chromosphere and at the bottom of the corona, respectively. The computational results show that incurred fast and slow MHD waves propagate away from the source of the disturbances. The fast MHD wave propagates as an expansive wave in the radial direction, while the slow one steepens and it may evolve into a slow shock. We suggest that the extreme ultraviolet imaging telescope wave observed by the SOHO and Moreton wave are a fast MHD wave propagating in the corona and in the chromosphere, respectively.

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