How correlated are f-mode frequencies with solar activity?

Details How correlated are f-mode frequencies with solar activity? How correlated are f-mode frequencies with solar activity?

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.464...27a&link_type=abstract

In: Proceedings of the SOHO 10/GONG 2000 Workshop: Helio- and asteroseismology at the dawn of the millennium, 2-6 October 2000,

Computer Science

17

Sun: Oscillations, Solar Activity, Sun: Interior

Scientific paper

Temporal variations of solar f-mode frequencies are studied using data from the Global Oscillation Network Group (GONG) and the Michelson Doppler Imager (MDI) covering the period from 1995 to 2000. The frequencies show an increase with activity. There appears to be one component in the time varying part of the frequencies which is correlated with the solar activity indices. Superposed on this is an oscillatory variation with a period of 1 year, whose origin is not clear. The amplitudes of both the oscillatory and non-oscillatory component increases with the degree (and hence frequency) of the mode.

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