Université de Nice-Sophia Antipolis, UMR6525 Astrophysique
Parc Valrose
PNPS-
06108
Nice, France
Presentation 1 : Poster
Variability of p-modes parameters in 11 years of IRIS++ data
Salabert D., Jiménez-Reyes S., Fossat E. and the IRIS team
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.