Guided MHD waves as a coronal diagnostic tool

Details Guided MHD waves as a coronal diagnostic tool Guided MHD waves as a coronal diagnostic tool

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986nascp2442..325r&link_type=abstract

In NASA. Goddard Space Flight Center Coronal and Prominence Plasmas p 325-327 (SEE N87-20871 13-92)

Mathematics

Logic

5

Field Strength, Magnetic Signatures, Magnetoacoustic Waves, Magnetohydrodynamic Waves, Solar Atmosphere, Solar Corona, Brightness Temperature, Helioseismology, Solar Flares, Solar Magnetic Field, Wave Propagation, Waveguides

Scientific paper

A description is provided of how fast magnetoacoustic waves are ducted along regions of low Alfven velocity (high density) in the corona, exhibiting a distinctive wave signature which may be used as a diagnostic probe of in situ coronal conditions (magnetic field strength, density inhomogeneity, etc.). Some observational knowledge of the start time of the impulsive wave source, possibly a flare, the start and end times of the generated wave event, and the frequency of the pulsations in that event permits a seismological deduction of the physical properties of the coronal medium in which the wave propagated. With good observations the theory offers a new means of probing the coronal atmosphere.

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