Abstract
With the help of a model atmosphere of the Sun we evaluate the pole-equator difference in flux (as measured by Dicke and Goldenberg) assuming the following type of pole-equator temperature difference (ΔT=T e −T p ): (a) ΔT ≈ 2K for τ > τ0 (τ0 ≈ 0.05); (b) ΔT ≈ 10K for τ < τ0.
The small ΔT at all optical depths given by (a) could, for example, be due to a pole-equator difference in effective temperatures. At small optical depths a difference in mechanical heating could give rise to the larger temperature difference given by (b). We compare the results of our calculations with Dicke and Goldenberg's observations.
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References
Athay, R. G.: 1970, Astrophys. J. 161, 713.
Chandrasekhar, S.: 1961, Hydrodynamic and Hydromagnetic Stability, Univ. Press, Oxford.
Dicke, R. H. and Goldenberg, H. M.: 1967, Phys. Rev. Letters 18, 313.
Durney, B. R.: 1971, Astrophys. J. 163, 353.
Durney, B. R. and Roxburgh, I. W.: 1969, Nature 221, 646.
Durney, B. R. and Roxburgh, I. W.: 1971, Solar Phys. 16, 3.
Gingerich, O. and de Jager, C.: 1968, Solar Phys. 3, 5.
Ingersoll, A. P. and Spiegel, E. A.: 1971, Astrophys. J. 163, 375.
Roxburgh, I. W.: 1967, Nature 213, 1077.
Ulmscheider, P. H.: 1969, ‘Chromosphere-Corona Transition Region’, p. 151 (manuscript presented at a conference held in Boulder, Colorado 25–27 August 1969).
Weiss, N. O.: 1964, Phil. Trans. Roy. Soc. 256, 99.
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The National Center for Atmospheric Research is sponsored by the National Science Foundation.
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Durney, B.R., Werner, N.E. On the solar oblateness: The combined effect of a pole-equator difference in effective temperature and mechanical heating. Sol Phys 21, 21–26 (1971). https://doi.org/10.1007/BF00155768
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DOI: https://doi.org/10.1007/BF00155768