p-mode frequencies variability in 15 years of IRIS++ data

Details p-mode frequencies variability in 15 years of IRIS++ data p-mode frequencies variability in 15 years of IRIS++ data

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..565s&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

1

Scientific paper

IRIS++ data (the low degree l >= 3 helioseismology network) have been analysed for the study of p-modes parameters over the solar cycle 22 and the rising phase of cycle 23. This paper discusses the variations of all p-modes parameters along these 11 years. We present the analysis of frequency dependance and time dependance of p-modes frequencies and linewidths. We focus our attention on frequency shifts and study their different behaviours between even and odd modes. We discuss also about periodicities less than 1 year which appear in the frequency measurements.

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