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SOLAR FLARES AND ERUPTIONS Lyndsay Fletcher University of Glasgow.

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Presentation on theme: "SOLAR FLARES AND ERUPTIONS Lyndsay Fletcher University of Glasgow."— Presentation transcript:

1 SOLAR FLARES AND ERUPTIONS Lyndsay Fletcher University of Glasgow

2 Sunspots - hotbeds of solar activity

3 Solar minimum, solar maximum

4 An active region seen by Hinode

5 Winding up the magnetic field Gas at the solar equator has a higher speed than that at the poles. This ‘winds up’ the magnetic field - like stretching a rubber band

6 Magnetic Loops

7 Twisted loops images:TRACE/NASA

8 A Solar Flare An explosion in the Sun’s corona cause by magnetic energy build-up

9 Start of a coronal mass ejection A billion tonnes of ionised gas, moving at a million kilometers per hour

10 Coronal mass ejections seen by SOHO

11 During solar maximum, the Sun produces about 3 big mass ejections per day Coronal mass ejections seen by SOHO

12 How do flares and eruptions affect Earth? We live inside the atmosphere of a star!


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