Do Active Regions Modify Oscillation Frequencies?

Details Do Active Regions Modify Oscillation Frequencies? Do Active Regions Modify Oscillation Frequencies?

2009-03-11

arxiv.org/abs/0903.2077v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 3 figures; To appear in "Magnetic Coupling between the Interior and the Atmosphere of the Sun", eds. S.S. Hasan and R

Scientific paper

We investigate the variation of high-degree mode frequencies as a local
response to the active regions in two different phases of the solar activity
cycle. We find that the correlation between frequency shifts and the surface
magnetic activity measured locally are significantly different during the two
activity periods.

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