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Solar physics

Dynamo theory questioned

Observations of X-ray emission — a diagnostic tool for the mechanisms driving stellar magnetic fields — from four cool stars call into question accepted models of magnetic-field generation in the Sun and stars. See Letter p.526

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Figure 1: Short-wavelength emission from the Sun.



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Correspondence to Paul Charbonneau.

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Charbonneau, P. Dynamo theory questioned. Nature 535, 500–501 (2016).

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