The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun
We estimated the relative location of the solar rotation axis and the magnetic axis of the solar dipole, which were defined as centers of polar coronal holes. We used observations of polar coronal hole data, which were originally obtained with Solar Dynamic Observatory (SDO) spacecraft. To calculate...
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MDPI AG
2025-03-01
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| Online Access: | https://www.mdpi.com/2075-4434/13/2/24 |
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| author | Alexandr Riehokainen Victoria Smirnova Alexander Solov’ev Polina Strekalova |
| author_facet | Alexandr Riehokainen Victoria Smirnova Alexander Solov’ev Polina Strekalova |
| author_sort | Alexandr Riehokainen |
| collection | DOAJ |
| description | We estimated the relative location of the solar rotation axis and the magnetic axis of the solar dipole, which were defined as centers of polar coronal holes. We used observations of polar coronal hole data, which were originally obtained with Solar Dynamic Observatory (SDO) spacecraft. To calculate the tilt of the magnetic axis relative to the rotation axis of the Sun, an empirical method for the estimation of the coronal hole centers is proposed. As a result, it was found that these axes do not coincide. The average deviation of the magnetic dipole axis from the rotation axis is ∼5 degrees of latitude. Using the wavelet transform method, it was found that the magnetic axis rotates around the rotation axis with a main period of 15–16 days. This period is related to the sector structure of the global magnetic field in the polar zones of the Sun. |
| format | Article |
| id | doaj-art-c2b9040844234758af2191c5fcfe63a4 |
| institution | OA Journals |
| issn | 2075-4434 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Galaxies |
| spelling | doaj-art-c2b9040844234758af2191c5fcfe63a42025-08-20T02:28:36ZengMDPI AGGalaxies2075-44342025-03-011322410.3390/galaxies13020024The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the SunAlexandr Riehokainen0Victoria Smirnova1Alexander Solov’ev2Polina Strekalova3Department of Physics and Astronomy, University of Turku, FI-20014 Turku, FinlandCrimean Astrophysical Observatory, Russian Academy of Sciences, Nauchny, Bakhchisaray 298409, RussiaCentral (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, Pulkovskoe Shausse 65, Saint-Petersburg 196140, RussiaCentral (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, Pulkovskoe Shausse 65, Saint-Petersburg 196140, RussiaWe estimated the relative location of the solar rotation axis and the magnetic axis of the solar dipole, which were defined as centers of polar coronal holes. We used observations of polar coronal hole data, which were originally obtained with Solar Dynamic Observatory (SDO) spacecraft. To calculate the tilt of the magnetic axis relative to the rotation axis of the Sun, an empirical method for the estimation of the coronal hole centers is proposed. As a result, it was found that these axes do not coincide. The average deviation of the magnetic dipole axis from the rotation axis is ∼5 degrees of latitude. Using the wavelet transform method, it was found that the magnetic axis rotates around the rotation axis with a main period of 15–16 days. This period is related to the sector structure of the global magnetic field in the polar zones of the Sun.https://www.mdpi.com/2075-4434/13/2/24sunmagnetic fieldoscillations of solar structuressolar rotation |
| spellingShingle | Alexandr Riehokainen Victoria Smirnova Alexander Solov’ev Polina Strekalova The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun Galaxies sun magnetic field oscillations of solar structures solar rotation |
| title | The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun |
| title_full | The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun |
| title_fullStr | The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun |
| title_full_unstemmed | The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun |
| title_short | The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun |
| title_sort | relative position of the solar magnetic dipole axis and rotation axis of the sun |
| topic | sun magnetic field oscillations of solar structures solar rotation |
| url | https://www.mdpi.com/2075-4434/13/2/24 |
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