The Structure of Solar Granulation - Part Two - Models of Vertical Motion

Details The Structure of Solar Granulation - Part Two - Models of Vertical Motion The Structure of Solar Granulation - Part Two - Models of Vertical Motion

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...237.1035k&link_type=abstract

Astrophysical Journal, Vol.237, P.1035, 1980

Astronomy and Astrophysics

Astrophysics

23

Scientific paper

Several models proposed for the height dependence of the vertical motion associated with granules are used to compute photo spheric line shifts. These predicted line shifts are compared with recent observations of line shifts resulting from granular motion in a number of lines whose heights of formation span the photosphere and low chromosphere. An empirical model of the granular flow giving agreement between predicted and observed line shifts is deduced. At a height 100 km above τ5000 Å = 1 the amplitude of the granular flow is approximately 2 km s-1, and an appropriate scale height for the granular flow at this altitude is ˜80 km.

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