Mathematics
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987stin...8918375h&link_type=abstract
Unknown
Mathematics
Doppler Effect, Error Analysis, Image Processing, Mathematical Models, Solar Oscillations, Spectral Signatures, Asymptotic Methods, Circular Polarization, Magnetic Fields, Power Spectra, Signal To Noise Ratios, Time Series Analysis
Scientific paper
Data obtained in the last 8 years of solar differential Doppler observations at Stanford were considered. The four best time series of data were examined in detail. The sources of error in the data were investigated and removed where possible. In particular, the contribution resulting from transparency variations in the sky was examined. Detection method applicable to data with low signal to noise ratio and low filling factor were developed and utilized for the investigation of global solar modes of oscillations in the data. The frequencies of p-modes were measured and identified. The presence of g-modes were also determined in the Stanford data.
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