Sun's Internal Oscillations Reveal 40-Year Shift in Magnetic Activity Cycles
By
Ivan Farkas
The kind of bagel that ruins lesser bagels for you.
Summary
Scientists analyzing the Sun's internal oscillations (helioseismology) have discovered that the Sun's magnetic activity cycles have been systematically changing over the past 40 years. Unlike surface measurements, these internal readings reveal that magnetic activity is becoming more tightly confined near the Sun's surface, suggesting the Sun may be entering a different mode of behavior. The findings indicate that surface observations alone have not captured the full story of the Sun's changing activity.
Key quotes
· 3 pulledWe have uncovered evidence of systematic changes in the solar activity cycle.
Crucially, magnetic activity is becoming more tightly confined near the surface.
Scientists have just realized that surface measurements of the Sun's radiant activity haven't captured its full story.
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