Antia, H. M. ; Basu, S. ; Hill, F. ; Howe, R. ; Komm, R. W. ; Schou, J. (2001) Studying asphericity in the solar sound speed from MDI and GONG data Proceedings of the SOHO 10/GONG 2000 Workshop: Helio- and Asteroseismology at the Dawn of the Millennium . pp. 45-50.
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Official URL: http://articles.adsabs.harvard.edu/cgi-bin/nph-iar...
Abstract
We study the variation of the frequency splitting coefficients describing the solar asphericity in both GONG and MDI data, and use these data to investigate temporal sound-speed variations as a function of both depth and latitude during the period 1995-2000. The temporal variations in even splitting coefficients are found to be correlated with the corresponding component of magnetic flux at the solar surface. The sound-speed variations associated with the surface magnetic field appear to be superficial. Temporally averaged results show a significant excess in sound speed around r=0.92 R⊙ and latitude of 60°.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to European Space Agency. |
| Keywords: | Sun: Oscillations; Sun: Activity; Sun: Interior |
| ID Code: | 75661 |
| Deposited On: | 24 Dec 2011 15:07 |
| Last Modified: | 18 May 2016 19:36 |
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