Abstract
We assume that the motion field in the solar photosphere is described by a spectrum of turbulence, defined by suitably chosen parameters. For various values of the spectral parameters we compute average (i.e. averaged over a sufficiently large part of the photosphere) profiles of weak Fraunhofer lines. The resulting profiles which represent the distribution function of line-of-sight velocity components as modified by the transfer of radiation through the atmosphere, are thereupon still broadened by a function representing the influence of the distribution function of the granulation cell sizes. The resulting functions should be compared with the distribution function of line-of-sight velocity components as derived from observations, in order to arrive at an observational derivation of the parameters of the photospheric spectrum of turbulence.
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References
Van Bueren, H. G.: 1973, Astron. Astrophys. 23, 247.
De Jager, C.: 1972, Solar Phys. 25, 71.
Namba, O. and Diemel, W. H.: 1969, Solar Phys. 7, 167.
Rutten, R., Hoyng, P., and De Jager, C.: 1974, in preparation.
Von Karman, Th.: 1950, in J. M. Burgers and H. C. van de Hulst (eds.), Problems of Cosmical Aerodynamics, Centr. Air Doc. Off. Ohio, p. 129.
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De Jager, C. The influence of a photospheric spectrum of turbulence on the profiles of weak Fraunhofer lines. Sol Phys 34, 91–103 (1974). https://doi.org/10.1007/BF00149601
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DOI: https://doi.org/10.1007/BF00149601