Every 11 years the polarity of the sun’s magnetic field is reversed. Could the weak tidal forces of Venus, the Earth and Jupiter directly influence the sun’s activity? Credit: NASA/SDO
The Sun’s activity is determined by the Sun’s magnetic field. Two combined effects are responsible for the latter: The omega and the alpha effect. Exactly where and how the alpha effect originates is currently unknown. Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) are putting forward a new theory for this in the journal Solar Physics. Their calculations suggest that tidal forces from Venus, the Earth and Jupiter can directly influence the Sun’s activity.
Many questions regarding the Sun’s magnetic field are still unanswered. “As with the Earth, we are dealing with a dynamo...
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