Does the Selection of a Quiet Region Influence the Local Helioseismic Inferences?

Details Does the Selection of a Quiet Region Influence the Local Helioseismic Inferences? Does the Selection of a Quiet Region Influence the Local Helioseismic Inferences?

2009-01-30

arxiv.org/abs/0901.4939v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, Submitted to Conference Proceedings of GONG 2008/ SOHO XXI

Scientific paper

We apply the ring-diagram technique to high resolution Dopplergrams in order to estimate the variation in oscillation mode parameters between active and quiet regions. We demonstrate that the difference in mode parameters between two quiet regions can be as large as those between a pair of active and quiet region. This leads us to conclude that the results derived on the basis of a single quiet region could be biased.

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