Abstract
The Kitt Peak multi-channel magnetograph was used to make raster scans of the super-granulation at the center of the disk. The scan pattern was arranged to largely cancel out the effects of the 5 min oscillations and the granulation and to enhance visible effects of the supergranulation.
The results show vertical supergranular motions. These motions consist of relatively isolated ‘patches’ of downward flowing material, or ‘downdrafts’, with an average speed of 0.1 km/s. These downdrafts coincide with patches of magnetic field, and the speed of the downdraft is linearly proportional to the magnetic field strength (50 to 100 G). These downdrafts are also regions of increased brightness in the chromosphere and photosphere.
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© 1971 International Astronomical Union
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Frazier, E.N. (1971). Supergranulation at the Center of the Disk. In: Howard, R. (eds) Solar Magnetic Fields. International Astronomical Union / Union Astronomique Internationale, vol 43. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-3117-2_35
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DOI: https://doi.org/10.1007/978-94-010-3117-2_35
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3119-6
Online ISBN: 978-94-010-3117-2
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