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Solar flares set the Sun quaking

18 April 2008

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This mega-flare was seen being spewed out by the Sun starting at 20:29 CET on 4 November 2003. This video sequence was captured by SOHO's Extreme ultraviolet Imaging Telescope.

Credits: SOHO/EIT (ESA & NASA)

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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 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)

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Artist's impression of the SOHO spacecraft.

Credits: ESA (Image by Total Design)

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