Picture Of The Month
In the solar subsurface layers one can observe a meridional flow which stretches from the equator to the poles. In our group we developed and applied a new helioseismic analysis method to measure the extension of the meridional flow in the deeper solar interior. The method uses the deformation of deeply penetrating solar acoustic waves due to the flow. We have analyzed 6 consecutive years of doppler velocity data with this method. The data were obtained between 2004-2010 by the Michelson Doppler Imager (MDI) on board of the Solar and Heliospheric Observatory (SoHO), a spacecraft of...
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