Solar p modes in 10 years of the IRIS network

Details Solar p modes in 10 years of the IRIS network Solar p modes in 10 years of the IRIS network

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...413.1135s&link_type=abstract

Astronomy and Astrophysics, v.413, p.1135-1142 (2004)

Astronomy and Astrophysics

Astrophysics

23

Sun: Helioseismology, Sun: Activity

Scientific paper

IRIS data (the low degree ℓ≤ 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 the periodicity of about 70 μHz of the high-frequency pseudo modes, with a much reduced visibility during the phase of higher activity.

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