Variability of High-Degree Modes over Multiple Solar Cycles Using Local Helioseismic Data from GONG

Authors

Nicholas Cebula, Macalester CollegeFollow
Sushanta Tripathy, National Solar ObservatoryFollow
Kiran Jain, National Solar ObservatoryFollow
John M. Cannon, Macalester CollegeFollow

Abstract

In this investigation we use the local helioseismic technique of ring diagrams to study the power, energy, and damping rates of high degree solar acoustic modes. Our data covers the period from the maximum phase of solar cycle 23 to the ascending phase of cycle 25. The goal is to examine the variations in the mode parameters with solar activity as well as the differences between different cycles. For this, we use different proxies of solar activity. We use 10.7 cm radio flux measurements and a measure of magnetic flux known as magnetic activity index from magnetograms.

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Recommended Citation

Cebula, Nicholas; Tripathy, Sushanta; Jain, Kiran; and Cannon, John M. (2024) "Variability of High-Degree Modes over Multiple Solar Cycles Using Local Helioseismic Data from GONG," Macalester Journal of Physics and Astronomy: Vol. 12: Iss. 1, Article 3.
Available at: https://digitalcommons.macalester.edu/mjpa/vol12/iss1/3