On the relation between photospheric flow fields and the magnetic field distribution on the solar surface

Details On the relation between photospheric flow fields and the magnetic field distribution on the solar surface On the relation between photospheric flow fields and the magnetic field distribution on the solar surface

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...327..964s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 327, April 15, 1988, p. 964-967. Research supported by the Lockheed Indepen

Astronomy and Astrophysics

Astrophysics

86

Flow Distribution, Magnetic Field Configurations, Photosphere, Solar Atmosphere, Solar Granulation, Solar Magnetic Field, Grain Boundaries, High Resolution, Magnetic Flux, Solar Cycles, Space Shuttle Mission 51-F

Scientific paper

Using the technique of local correlation tracking on a 28 minute time sequence of white-light images of solar granulation, the horizontal flow field on the solar surface is measured. The time series was obtained by the Solar Optical Universal Polarimeter (SOUP) on Spacelab 2 (Space Shuttle flight 51-F) and is free from atmospheric blurring and distortion. The SOUP flow fields have been compared with carefully aligned magnetograms taken over a nine hour period at the Big Bear Solar Observatory before, during, and after the SOUP images. The flow field and the magnetic field agree in considerable detail: vectors which define the flow of the white-light intensity pattern (granulation) point toward magnetic field regions, magnetic fields surround flow cells, and magnetic features move along the flow arrows. The projected locations of free particles ('corks') in the measured flow field congregate at the same locations where the magnetic field is observed.

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