Sun's magnetic activity influences age

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Astrophysics

Université de Genève - Université de Genève

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Sun’s magnetic activity has a significant influence on its seismic age

Summary

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77% Informative

An international team led by a researcher from the University of Geneva ( UNIGE ) has shown that the Sun ’s magnetic activity has a significant influence on its seismic characterisation, contrary to predictions in the literature.

The age of the Sun , as determined by helioseismology, varies significantly according to the level of activity of the solar cycle.

The impact of the activity cycle on the seismic age is more marked for the more active of the two cycles studied.

The Sun is not a particularly active star, which suggests the impact of magnetic activity could be very significant for more active stars such as those that PLATO will detect’, adds Jérôme Bétrisey .

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semi-formal

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English

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