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Temperature variations in the solar photosphere

II: A search for equator-to-pole differences in photospheric temperature

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Abstract

From the variations in equivalent width of a selected set of Fraunhofer lines, we derived the variation of effective temperature and microturbulence velocity between the equator and the regions at heliographic latitude of ∼- 72°. The reliability of the results (ΔT/T = 0 ± 0.6%, Δξ/ξ = 6% ± 13%) needs further investigations, but from the analysis of our data we can state that temperature variations, if any, are very small. Some suggestions for more fruitful measurements are also given.

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Authors and Affiliations

  1. Capodimonte Astronomical Observatory, Naples, Italy

    R. Falciani, M. Rigutti & G. Roberti

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  1. R. Falciani
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  2. M. Rigutti
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  3. G. Roberti
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Falciani, R., Rigutti, M. & Roberti, G. Temperature variations in the solar photosphere. Sol Phys 35, 277–280 (1974). https://doi.org/10.1007/BF00151948

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  • DOI: https://doi.org/10.1007/BF00151948

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