We derive two principal components (PCs) of temporal magnetic field variations over the
solar cycles 21–24 from full disk magnetograms covering about 39% of data variance, with …

Solar magnetic activity is expressed via variations of sunspots and active regions varying on
different timescales. The most accepted is an 11-year period supposedly induced by the …

One of the basic features of solar activity is the quasi-biennial oscillations (QBOs)—
variations with a period of about two years. The nature of the QBO remains unclear and the …

The spatiotemporal and chaotic dynamics of variations in area of sunspot groups related
conventionally to small (area< 50 Msh) and large (area> 50 Msh) populations is analyzed …

Magnetic field generation and evolution models that are capable of describing a large body
of observational material are currently available for different celestial bodies. Despite recent …

It is commonly accepted that the magnetic field of the Sun and other stars is generated
through the operation of the dynamo mechanism which is based on taking into account the …

В настоящее время разработаны модели генерации и эволюции магнитного поля
Солнца, звёзд и галактик, описывающие большой наблюдательный материал …

The cycles of solar magnetic activity are connected with a solar dynamo that operates in the
convective zone. Solar dynamo mechanism is based on the combined action of the …

Stellar rotation plays an important role in maintaining the magnetic fields inside the stellar
interior through convection, and starspots are the most visible manifestation of the interplay …

Считается, что циклическая магнитная активность солнца имеет основной период,
равный примерно 22 годам. Однако более тщательные исследования показали, что …