Variability of p-mode parameters in 11 years of IRIS++ data

Details Variability of p-mode parameters in 11 years of IRIS++ data Variability of p-mode parameters in 11 years of IRIS++ data

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.508...95s&link_type=abstract

In: Proceedings of the SOHO 11 Symposium on From Solar Min to Max: Half a Solar Cycle with SOHO, 11-15 March 2002, Davos, Switze

Mathematics

Logic

2

Sun: Oscillations, Low Degree P-Modes, Solar Activity, Data Analysis

Scientific paper

IRIS++ data (the low degrees l <= 3 helioseismologic network) have been analysed for the study of p-modes parameters variability 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 their evolution with solar acitivity. We also study the different behaviours between modes of different degrees, and the relation with solar activity indexes. We also discuss periodicities shorter than 1 year which appear in the frequency shifts measurements.

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