Waves in structured media: non-radial solar P modes

Details Waves in structured media: non-radial solar P modes Waves in structured media: non-radial solar P modes

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...335..685s&link_type=abstract

Astronomy and Astrophysics, v.335, p.685-690 (1998)

Astronomy and Astrophysics

Astrophysics

10

Convection, Sun: Granulation, Sun: Oscillations

Scientific paper

For non-radial solar p modes we calculate corrections to the eigenfrequencies arising from the sound speed and velocity inhomogeneity of the convection zone. We use a simple periodic model, and obtain the frequency corrections by solving a Hill determinant. The frequency shifts are significant, and in most cases negative; they increase in magnitude with increasing frequency and harmonic degree l. The dependence on degree scales with the mode inertia. For large degree l this trend reverses. For very large degree coupling occurs between the p modes and ``vibrational'' modes that only exist because of the horizontal structure in sound speed and velocity.

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