Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...649.1155h&link_type=abstract
The Astrophysical Journal, Volume 649, Issue 2, pp. 1155-1168.
Astronomy and Astrophysics
Astronomy
20
Sun: Activity, Sun: Helioseismology, Sun: Oscillations
Scientific paper
The nearly 10 year span of medium-degree helioseismic data from the Global Oscillation Network Group and the Michelson Doppler Imager has allowed us to study the evolving flows in the solar convection zone over most of solar cycle 23. Using two independent two-dimensional rotation inversion techniques and extensive studies of the resolution using artificial data from different assumed flow profiles, including those generated from sample mean field dynamo models, we attempt to assess the reality of certain features seen in the inferred rotation profiles. Our results suggest that the findings from observations of a substantial depth dependence of the phase of the zonal flow pattern in the low latitudes, and the penetration of the flows deep into the convection zone, are likely to be real rather than artifacts of the inversion process.
Christensen-Dalsgaard Joergen
Hill F. F.
Howe Rachel
Komm Rudi
Larsen Rasmus M.
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