Solar flares set the Sun quaking

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A frequency-time diagram of global oscillations in the Sun as measured by SOHO. The colour-coding represents the strength of the oscillations. The bright horizontal lines are strongly correlated with solar flares represented by the solar X-ray flux i ...
A frequency-time diagram of global oscillations in the Sun as measured by SOHO. The colour-coding represents the strength of the oscillations. The bright horizontal lines are strongly correlated with solar flares, represented by the solar X-ray flux in the right panel. These lines are most prominent in the high-frequency region of the spectrum. The vertical line at 5.55 mHz in the left panel is an instrumental artifact. Credits: SOHO/VIRGO (ESA & NASA)

Data from the ESA/NASA spacecraft SOHO shows clearly that powerful starquakes ripple around the Sun in the wake of mighty solar flares that explode above its surface. The observations give solar physicists new insight into a long-running solar mystery and may even provide a way of studying other stars.


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