Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007asthe.100..649k&link_type=abstract
The Astronomical Herald (ISSN 0374-2466), Vol. 100, No. 12, p. 649 - 655 (2007)
Astronomy and Astrophysics
Astronomy
Sunspots
Scientific paper
Small magnetic elements moving outward are generally observed in the zone surrounding mature sunspots. Such small magnetic elements were thought to carry away magnetic flux from sunspots. A relationship between the small magnetic elements and sunspot decay is investigated using vector magnetic fields in the photosphere. It is found that there are small magnetic elements with magnetic fields horizontal and relatively vertical to the solar surface located on the lines extrapolated from the horizontal and vertical components of the penumbral fields, respectively. This means that magnetic fields of the small magnetic elements are originated from the penumbral magnetic fields. In addition, the authors have obtained observational results suggesting that the magnetic elements having vertical fields with polarity same as the sunspot are alone responsible for the disintegration of the sunspot.
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