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Paper: On the Latitude Distribution of the Polar Magnetic Flux as Observed by SOLIS-VSM
Volume: 405, Solar Polarization 5: In Honor of Jan Olof Stenflo
Page: 201
Authors: Raouafi, N.-E.; Harvey, J.W.; Henney, C.J.
Abstract: Magnetograms from the Vector SpectroMagnetograph (VSM) of the Synoptic Optical Long-term Investigations of the Sun (SOLIS) project are utilized to study the latitude distribution of magnetic flux elements as a function of latitude in the polar solar caps. We find that the density distribution of the magnetic flux normalized by the surface of the polar cap and averaged over months decreases close to the solar poles. This trend is more pronounced when considering only flux elements with relatively large size. The flux density of the latter is relatively flat from the edge of the polar cap up to latitudes of 70°–75° and decreases significantly to the solar pole. This result is important in studying meridional flows that bring the magnetic flux from lower to higher solar latitudes resulting in the solar cycle reversal. The results are also of importance in studying polar structures contributing to the fast solar wind, such as polar plumes.
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