RAS PhysicsГеомагнетизм и аэрономия Geomagnetism and Aeronomy

  • ISSN (Print) 0016-7940
  • ISSN (Online) 3034-5022

Bipoles in the Extended Solar Cycle

PII
S3034502225070134-1
DOI
10.7868/S3034502225070134
Publication type
Article
Status
Published
Authors
Volume/ Edition
Volume 65 / Issue number 7
Pages
1083-1087
Abstract
The properties of magnetic bipoles are analyzed. For this purpose, magnetic bipoles of different sizes are identified using SDO/HMI magnetic field data for the period 2010–2024. The distribution of bipoles in the solar cycle is considered depending on the magnetic polarity in the Hale law. It is shown that magnetic bipoles of the polarity corresponding to the current 22-year magnetic cycle arise at high latitudes 2–4 years before the first sunspots appear. This distribution of magnetic bipoles is consistent with the hypothesis of the extended solar cycle. The dependence of the length of the bipole magnetic axis, , on the magnetic bipole area is analyzed. It is shown that there is a local maximum of the parameter corresponding to distances –20 and 86 Mm. The distribution of bipoles is plotted in the coordinates of tilt-angle, τ, and length of the magnetic axis, . The −τ diagram shows inhomogeneities possibly associated with the influence of supergranulation on the bipoles.
Keywords
Солнце солнечные пятна магнитные биполи расширенный цикл активности
Date of publication
17.06.2025
Year of publication
2025
Number of purchasers
0
Views
21

References

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