Variations in p-mode Parameters and Sub-surface Flows of Active Regions with Flare Activity

Details Variations in p-mode Parameters and Sub-surface Flows of Active Regions with Flare Activity Variations in p-mode Parameters and Sub-surface Flows of Active Regions with Flare Activity

2011-06-21

arxiv.org/abs/1106.4180v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

7 pages, 3 figures, to be appear in the ASI Conference Series

Scientific paper

We examine the characteristic properties of photospheric p-modes and sub-photospheric flows of active regions (ARs) observed during the period of 26-31 October 2003. Using ring diagram analysis of Doppler velocity data obtained from the Global Oscillations Network Group (GONG), we have found that p-mode parameters evolve with ARs and show a strong association with flare activity. Sub-photospheric flows, derived using inversions of p-modes, show strong twist at the locations of ARs, and large variation with flare activity.

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