Frequencies of solar p-mode oscillations

Details Frequencies of solar p-mode oscillations Frequencies of solar p-mode oscillations

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...324.1158d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 324, Jan. 15, 1988, p. 1158-1171.

Astronomy and Astrophysics

Astrophysics

75

Doppler Effect, Frequency Shift, Helioseismology, Photosphere, Solar Oscillations, Error Analysis, Least Squares Method, Power Spectra, Solar Activity, Solar Interior

Scientific paper

Acoustic oscillations of the Sun were observed by measuring Doppler shifts at Big Bear Solar Observatory in 1985 and by measuring intensity fluctuations at the geographic South Pole in 1981. These data are reduced to spectra in frequency and spherical harmonic degree, l, by averaging over azimuthal order after removing frequency shifts caused by rotation. Distinct spectral features are identified and fitted with models to produce estimates of multiplet frequencies and errors. The authors present a table of measured frequencies for 4 ≤ l ≤ 99, with measurement uncertainties of the order of one part in 104. Tables of published frequency measurements for l ≤ 5 are also included.

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