The global oscillation spectrum of the sun. II - The observed low L high N solar p-mode spectrum

Details The global oscillation spectrum of the sun. II - The observed low L high N solar p-mode spectrum The global oscillation spectrum of the sun. II - The observed low L high N solar p-mode spectrum

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...170..114p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 170, no. 1, Dec. 1986, p. 114-119. Research supported by the Consejo Superior

Astronomy and Astrophysics

Astrophysics

24

Frequency Distribution, Power Spectra, Solar Cycles, Solar Oscillations, Vibration Mode, Asymptotic Properties, Time Series Analysis

Scientific paper

Using data from observing seasons 1977 through 1984, an analysis of the low l, high n p-mode solar spectra is made with a 0.9 μHz resolution. Frequencies and amplitudes of modes of l < 3 and 11 < n < 33 are determined for each observing season. No clear variation of the frequencies at the 1 μHz level is found and the amplitudes remain constant to ˜ 20%. The frequency spacings between different modes are compared over the solar cycle, as are the constants in Tassoul's asymptotic formula evaluated for each season: no conclusive variations are found.

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