Solar p-modes frequency variations between 1980 and 1986

Details Solar p-modes frequency variations between 1980 and 1986 Solar p-modes frequency variations between 1980 and 1986

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.286..275g&link_type=abstract

In ESA, Seismology of the Sun and Sun-Like Stars p 275-277 (SEE N89-25819 19-92)

Physics

3

P Waves, Periodic Variations, Solar Oscillations, Solar Spectra, Cross Correlation, Helioseismology, Power Spectra

Scientific paper

Using a method of power spectra cross-correlation, a 0.39 micro Hz decrease of solar low degree p-mode frequencies between 1980 and the end of 1984 was determined. The same method applied to 1984/85 South Pole data and to all the ACRIM data obained until April 1986 confirms the value of this decrease. An extreme stability of these frequencies from spring 1984 to spring 1986 with a relative accuracy of 0.02 micro Hz is found.

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