Solarpmodes in 10 years of the IRIS network

D. Salabert, E. Fossat, B. Gelly, S. Kholikov, G. Grec, M. Lazrek, F. X. Schmider
2004 Astronomy and Astrophysics  
IRIS data (the low degree ≤ 3 helioseismology network) have been analysed for the study of p-mode parameters variability over the falling phase of the solar activity cycle 22 and the rising phase of the solar activity cycle 23. The IRIS duty cycle has been improved by the so-called "repetitive music method", a method of partial gap filling. We present in this paper an analysis of the dependence of p-mode frequencies and linewidths with frequency and with solar magnetic activity. We confirm also
more » ... ty. We confirm also the periodicity of about 70 µHz of the high-frequency pseudo modes, with a much reduced visibility during the phase of higher activity. Article published by EDP Sciences and available at
doi:10.1051/0004-6361:20031541 fatcat:3wtf6q7bknabtht5ioh3wsv36a