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The effect of two-dimensional macroscopic velocity fields on models of the lower solar chromosphere

โœ Scribed by C. J. Cannon

Publisher
Springer
Year
1971
Tongue
English
Weight
606 KB
Volume
21
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

Two-dimensional macroscopic velocity fields are featured in the calculation of twodimensional models of the lower solar chromosphere. Relative rms line centre intensity fluctuation data and mean limb darkening data obtained in Mg b and Na D are used together with values of the cross-correlation between line centre brightness and 'line of sight velocities'. It is found that the large scale fluctuation data can be explained by models of the lower solar chromosphere in which the inhomogeneous effects arise only from horizontal, two-dimensional macroscopic velocity fields. It is also shown, however, that the corresponding small scale fluctuation data cannot be explained in a similar manner.

The cross-correlation data is found to be a powerful constraint in the computation of twodimensional models of these regions.

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