The modes of oscillation of a prominence. I - The slab with longitudinal magnetic field

Details The modes of oscillation of a prominence. I - The slab with longitudinal magnetic field The modes of oscillation of a prominence. I - The slab with longitudinal magnetic field

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...256..264j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 256, no. 1, p. 264-272.

Astronomy and Astrophysics

Astrophysics

32

Magnetohydrodynamic Waves, Solar Magnetic Field, Solar Oscillations, Solar Prominences, Astronomical Models, Vibration Mode

Scientific paper

We consider theoretically the modes of oscillation of a solar quiescent prominence, treating the prominence as a three-dimensional, magnetized plasma slab embedded in a uniform magnetic field. We examine the normal modes of oscillation of such a system. The existence of fast MHD surface modes with periods of the order of an hour is of particular interest. These modes, which are closely analogous to the classical modes of vibration of an elastic membrane, may correspond to the observed long-period oscillations of quiescent prominences. Shorter periodicities, in the range 3-5 min, may be associated with the fundamental of the magnetic Pekeris mode and the first harmonic of the magnetic Love mode.

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