Bogart, Richard S. ; Basu, Sarbani ; Antia, H. M. (2002) Changes in high-degree mode characteristics with magnetic activity Proceedings of the SOHO 11 Symposium on From Solar Min to Max: Half a Solar Cycle with SOHO . pp. 145-148.
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Official URL: http://articles.adsabs.harvard.edu/cgi-bin/nph-iar...
Abstract
We compare mode frequencies and other characteristics as determined from ring-diagram analysis of selected small regions of the Sun exhibiting strong variations in magnetic activity. These regions were observed with the Michelson Doppler Imager (MDI) on SOHO in its high-resolution mode during several years from solar minimum to maximum. To better understand the systematic uncertainties in fitting the ridges to the high-resolution data, we compare our results with those for the same regions concurrently observed in the MDI full-disc mode. We find that the properties of high degree p-modes are different in active and quiet regions and that the magnitude of the changes depend on the activity level.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to European Space Agency. |
| Keywords: | Helioseismology; Ring-diagrams; Mode Parameters; Solar Magnetic Activity |
| ID Code: | 75669 |
| Deposited On: | 24 Dec 2011 15:08 |
| Last Modified: | 18 May 2016 19:37 |
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