Volume 369, Number 2, April II 2001
|Page(s)||643 - 643|
|Section||Planets and planetary systems|
|Published online||15 April 2001|
Spectral signature of uncombed penumbral magnetic fields
Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain
Accepted: 13 December 2000
The conservation of magnetic flux demands a magnetic field fine structure as small as 15 km to explain the net circular polarization observed in penumbrae (Sánchez Almeida [CITE]). A recent work by Martínez Pillet ([CITE]) claims that modeling penumbrae as a collection of fluxtubes 100 km wide suffices. We identify several shortcomings of such modeling so that it is presently unclear whether it really contradicts the former conclusion.
Key words: Sun: magnetic fields / sunspots
© ESO, 2001
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