Using Velocity and Intensity helioseismic data for improving our knowledge of the Solar interior.

Details Using Velocity and Intensity helioseismic data for improving our knowledge of the Solar interior. Using Velocity and Intensity helioseismic data for improving our knowledge of the Solar interior.

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..501b&link_type=abstract

SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,

Astronomy and Astrophysics

Astrophysics

Scientific paper

Helioseismology, the study of the solar global oscillations, seeks to infer the properties of the solar interior from the oscillation mode parameters, primarily the frequency. The parameters are typically determined by using the observed Doppler velocity (V) data, neglecting the information contained in the total intensity (I) data. This information content is demonstrated by qualitative differences (frequency shifts, reverse mode line asymmetry) which are likely to arise from the excitation mechanism. We present here our current work about the use of both I and V data for improving the mode parameter estimation and then our knowledge of the solar interior and also for providing new measures of the excitation.

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