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arXiv · 1303.6722

Temporal Variations of High-Degree Solar p-Modes using Ring-Diagram Analysis

Olga Burtseva·Sushant Tripathy·Richard Bogart·Kiran Jain·Rachel Howe·Frank Hill·Maria Cristina Rabello-Soares
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Abstract

We study temporal variations in the amplitudes and widths of high-degree acoustic modes by applying the ring-diagram technique to the GONG+, MDI and HMI Dopplergrams during the declining phase of cycle 23 and rising phase of cycle 24. The mode parameters from all three instruments respond similarly to the varying magnetic activity. The mode amplitudes and widths show consistently lower variation due to smaller magnetic activity in cycle 24 as compared to the previous solar cycle.

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Olga Burtseva, Sushant Tripathy, Richard Bogart, Kiran Jain, Rachel Howe, Frank Hill, Maria Cristina Rabello-Soares. 2013-03-27. Temporal Variations of High-Degree Solar p-Modes using Ring-Diagram Analysis. https://doi.org/10.1088/1742-6596/440/1/012027

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