Amplitude modulation of low-degree solar p-modes

Details Amplitude modulation of low-degree solar p-modes Amplitude modulation of low-degree solar p-modes

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...253..252e&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 253, no. 1, Jan. 1992, p. 252-260.

Astronomy and Astrophysics

Astrophysics

11

Amplitude Modulation, Helioseismology, P Waves, Power Spectra, Solar Oscillations, Solar Spectra, Frequency Distribution, Iris Satellites, Statistical Analysis

Scientific paper

Due to the combined effect of varying interference between unresolved individual p-modes and the true amplitude modulation of these p-modes, the power spectrum obtained over one day of full-disk helioseismic data varies strongly from day to day. The statistical distribution of power within a given peak has accordingly been studied as a function of modulation-amplitude magnitude. The result obtained is dependent on the level of interdependence of the amplitude fluctuations displayed by the various individual modes. Two independent, converging values are obtained for the amplitude modulation.

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