Temperature variations in the solar photosphere

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 1974 English Publisher:Springer Science and Business Media LLCJournal:Solar Physics, volume 35, pages 277-280 (issn: 0038-0938, eissn: 1573-093X,

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Authors: R. Falciani; M. Rigutti; G. Roberti;

doi: 10.1007/bf00151948

Temperature variations in the solar photosphere

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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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