Solar Cycle Variations of Large-Scale Flows in the sun |
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Authors: | Basu Sarbani Antia H.M. |
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Affiliation: | (1) Institute for Advanced Study, Olden Lane, Princeton, NJ , 08540, U.S.A.;(2) Astronomy Department, Yale University, P.O. Box 208101, New Haven, CT , 06520-8101, , U.S.A.;(3) Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai , 400005, India |
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Abstract: | Using data from the Michelson Doppler Imager (MDI) instrument on board the Solar and Heliospheric Observatory (SOHO), we study the large-scale velocity fields in the outer part of the solar convection zone using the ring diagram technique. We use observations from four different times to study possible temporal variations in flow velocity. We find definite changes in both the zonal and meridional components of the flows. The amplitude of the zonal flow appears to increase with solar activity and the flow pattern also shifts towards lower latitude with time. |
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