Research of large-scale solar magnetic fields at CrAO
The origin and evolution of large-scale magnetic fields is one of the key problems in solar physics. The detailed studies show that the total contribution of weak magnetic fields into the total magnetic field of the Sun is higher than 90 %. A study of large-scale magnetic fields is important not only for understanding their nature, cause and effect relationships between solar activity and properties of magnetic fields. Large-scale magnetic fields have also an important applied aspect, since the large-scale magnetic fields determine largely the state of the interplanetary medium, and thus play an important role in the context of solar-terrestrial relations. The paper gives a historical summary of the research carried out in this direction. The emphasis is made on investigations of the Crimean scientists, since the study of weak magnetic fields on the Sun is one of the branches in the study of solar magnetism at the Crimean Astrophysical Observatory in the last few decades.
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