Wave propagation in a magnetically structured atmosphere. I - Surface waves at a magnetic interface.

Details Wave propagation in a magnetically structured atmosphere. I - Surface waves at a magnetic interface. Wave propagation in a magnetically structured atmosphere. I - Surface waves at a magnetic interface.

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981soph...69...27r&link_type=abstract

Solar Physics, vol. 69, Jan. 1981, p. 27-38.

Physics

185

Magnetoacoustic Waves, Magnetohydrodynamic Waves, Solar Atmosphere, Solar Magnetic Field, Surface Waves, Wave Propagation, Fourier Analysis, Inhomogeneity, Photosphere, Pressure Effects, Propagation Velocity, Solar Corona, Thermodynamic Equilibrium

Scientific paper

The inhomogeneity that is introduced by a magnetic field in the solar atmosphere in a direction orthogonal to the field is examined. For a single magnetic interface with one field-free side, a slow surface wave can always propagate. A fast surface wave may propagate if the field-free medium is warmer than the magnetic atmosphere. For an isolated magnetic slab, the field can support the propagation of both body and surface waves. The existence and nature of these waves depends on the relative magnitudes of the sound speed and Alfven speed inside the slab and the sound speed in the field-free environment. The slow mode can always propagate, and does so both as a surface wave and as a body wave. The fast mode may propagate only in slabs that are not hotter than their surroundings (the sound speed in the field free environment greater or equal to the sound speed inside the slab), and then it is a body wave or a surface wave accordingly as the sound speed in the field-free environment is greater or less than the Alfven speed inside the slab. The special case of a slender field is also investigated, and it is demonstrated how the slender flux tube approximation relates to the more general results. The generation of resonant modes in a slender slab is briefly addressed.

Affiliated with

Also associated with

No associations

Rating

Wave propagation in a magnetically structured atmosphere. I - Surface waves at a magnetic interface. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Wave propagation in a magnetically structured atmosphere. I - Surface waves at a magnetic interface., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wave propagation in a magnetically structured atmosphere. I - Surface waves at a magnetic interface. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1054254