Spörer's law
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Spörer's law predicts the variation of sunspot latitudes during a solar cycle.[1] It was discovered by the English astronomer Richard Christopher Carrington around 1861.[citation needed] Carrington's work was refined by the German astronomer Gustav Spörer.
At the start of a sunspot cycle, sunspots tend to appear around 30° to 45° latitude on the Sun's surface. As the cycle progresses, sunspots appear at lower and lower latitudes, until they average 15° at solar maximum. The average latitude of sunspots then continues to drift lower, down to about 7° and then while the old sunspot cycle fades, sunspots of the new cycle start appearing at high latitudes.[citation needed]
[edit] See also
[edit] References
- ^ Hopkins, Jeanne (1980). Glossary of astronomy and astrophysics. Chicago: University of Chicago Press. ISBN 0-226-35171-8.
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