Effects of non-parallel propagation on p- and f-modes

Details Effects of non-parallel propagation on p- and f-modes Effects of non-parallel propagation on p- and f-modes

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...286..243j&link_type=abstract

Astronomy and Astrophysics 286, 243-253 (1994)

Astronomy and Astrophysics

Astrophysics

28

Sun: Chromosphere, Sun: Magnetic Field, Sun: Oscillation

Scientific paper

The frequencies of p- and f-modes are calculated for a model atmosphere consisting of an isothermal chromospheric gas, within which is embedded a non-uniform horizontal magnetic field, resting upon a field-free medium whose temperature increases linearly with depth. The Alfven speed within the chromosphere is assumed to be independent of height. The modes may propagate at an angle θ to the magnetic field. The p-mode frequencies decrease with an increase in either the magnetic field strength or the propagation angle θ. The frequency of the f-mode is increased by the presence of a magnetic field; the frequency decreases with increasing angle θ.

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