Revisit of the Classic Wilson Effect
Abstract
We have examined theWilson effect in 580 epochs of sunspots observed at the Kodaikanal Observatory. Only unipolar spots that are well isolated from opposite polarity spots or pores (49%) exhibit the classic Wilson effect. The larger the isolation, the stronger is the effect. Unipolar spots also show a decrement of the effect that seems to be related to age. However, bipolar spots (45%) do not display theWilson effect, while spots associated with a mixed-polarity magnetic configuration (6%) show an inverse effect. We are now studying dynamic responses of spot penumbrae to their ambient magnetic configuration.
- Publication:
-
Magnetic Coupling between the Interior and Atmosphere of the Sun
- Pub Date:
- 2010
- DOI:
- 10.1007/978-3-642-02859-5_39
- Bibcode:
- 2010ASSP...19..398B
- Keywords:
-
- Physics