Relating photometric and magnetic properties of structures at solar surface

We investigate sharp structures visible in solar magnetic field tracers. It is shown that the sunspot magnetic boundaries do not coincide with the photometric ones. Moreover, there is no clear boundary of the magnetic field in the vicinity of sunspots. Thus, the widely accepted concept of magnetic t...

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Bibliographic Details
Published inJournal of atmospheric and solar-terrestrial physics Vol. 252; p. 106152
Main Authors Obridko, Vladimir, Sokoloff, Dmitry, Katsova, Maria
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2023
Subjects
Solar cycle
Sun:magnetic fields
Solar cycle
Sun:magnetic fields
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Summary:We investigate sharp structures visible in solar magnetic field tracers. It is shown that the sunspot magnetic boundaries do not coincide with the photometric ones. Moreover, there is no clear boundary of the magnetic field in the vicinity of sunspots. Thus, the widely accepted concept of magnetic tubes with sharp edges is not always correct and should be used with caution. It is also shown that even in the moments of complete absence of visible spots on the Sun, there are magnetic fields over 800 Gauss. The nature of these strong magnetic fields remains unclear; they may originate at relatively small depths under the photosphere.
ISSN:1364-6826
1879-1824
DOI:10.1016/j.jastp.2023.106152