Analysis and interpretation of synthetic time strings of oscillation data

Details Analysis and interpretation of synthetic time strings of oscillation data Analysis and interpretation of synthetic time strings of oscillation data

Publishing date

Dec 1984

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984sses.nasa..279m&link_type=abstract

Journals

In its Solar Seismology from Space. p 279-292 (SEE N85-25060 14-92)

Science

Astronomy and Astrophysics

Field

Astronomy

Additional info 2

3

Additional info 3

Electromagnetic Noise, Solar Oscillations, Solar Rotation, Spatial Filtering, Splitting, Synthetic Apertures, Time Series Analysis, Angular Distribution, Astronomical Models, Helioseismology, Power Spectra

Type

Scientific paper

Abstract

Artificial strings of solar oscillation data with gaps and noise, corresponding to the output of different spatial filter functions, were analyzed. Peaks in the power spectrum are identified for values of the degree l from 0 to 18, and rotational splitting is estimated. The filters prove effective in facilitating identification of essentially all the real peaks in the power spectrum. Estimates of peak frequencies and amplitudes and rotational splitting frequencies are in reasonably good agreement with the input values. Spurious peaks in autocorrelation spectra correspond to the frequency spacing between power peaks with the same order n, differing by one or two in the degree l.

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