A New Component of Solar Dynamics: North-South Diverging Flows Migrating toward the Equator with an 11 Year Period
J. G. BeckW. W. Hansen Experimental Physics Laboratory, Stanford University, 455 Via Palou, Stanford, CA 94305-4085L. GizonW. W. Hansen Experimental Physics Laboratory, Stanford University, 455 Via Palou, Stanford, CA 94305-4085T. L. DuvallLaboratory for Astronomy and Solar Physics, NASA Goddard Space Flight Center, Greenbelt, MD 20771
2002en
ABI
Аннотация
Time-distance helioseismology analysis of dopplergrams provides maps of torsional oscillations and meridional flows. Meridional flow maps show a time-varying component that has a banded structure which matches the torsional oscillations with an equatorward migration over the solar cycle. The time-varying component of meridional flow consists of a flow diverging from the dominant latitude of magnetic activity. These maps are compared with other torsional oscillation maps and with magnetic flux maps, showing a strong correlation with active latitudes. These results demonstrate a strong link between the time-varying component of the meridional flow and the torsional oscillations.
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