Do young Suns undergo magnetic reversals?

Details Do young Suns undergo magnetic reversals? Do young Suns undergo magnetic reversals?

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..264..130m&link_type=abstract

Solar and Stellar Variability: Impact on Earth and Planets, Proceedings of the International Astronomical Union, IAU Symposium,

Astronomy and Astrophysics

Astronomy

2

Stars: Late-Type, Stars: Imaging, Stars: Magnetic Fields

Scientific paper

A key part of the modern-day regenerative solar magnetic dynamo is the reversal of the Sun's global magnetic field every eleven years. However, recent theoretical models indicate that young-rapidly rotating Sun-like stars may not always undergo full magnetic reversals, but instead may sometimes undergo “attempted” reversals where the magnetic field declines in strength only to return with the same polarity. Using the technique of Zeeman Doppler imaging we have mapped the magnetic field topology of a small sample of young Sun-like stars at multiple epochs, and present tentative evidence of an “attempted” magnetic field reversal on one of our stars.

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