Effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphere
Using SDO/HMI data, we have studied the dynamics of small-scale magnetic field elements in the photosphere during the formation of small active region USAF/NOAA 12761. The choice of this region is due to the fact that it formed near the central meridian at the minimum of the 11-year solar activity c...
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INFRA-M
2025-03-01
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| Series: | Solar-Terrestrial Physics |
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| Online Access: | http://doi.org/10.12737/stp-111202501 |
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| author | Grigoryev Victor Ermakova Lyudmila |
| author_facet | Grigoryev Victor Ermakova Lyudmila |
| author_sort | Grigoryev Victor |
| collection | DOAJ |
| description | Using SDO/HMI data, we have studied the dynamics of small-scale magnetic field elements in the photosphere during the formation of small active region USAF/NOAA 12761. The choice of this region is due to the fact that it formed near the central meridian at the minimum of the 11-year solar activity cycle in the absence of strong background magnetic fields. It has been established that two days before the formation of the first pores, the initially observed small-scale structure of the magnetic field forms chains of elements of both polarities. The structure of the chains creates a stable polarity dividing line (PIL). During the first day, the orientation of PIL changes from quasi-latitudinal to quasi-meridional. After comparing observations with a number of theoretical models, we concluded that the observed dynamics of elements of magnetic chains is consistent with the models of emergence of a magnetic flux rope in the photosphere. |
| format | Article |
| id | doaj-art-345d4bee98d04e4aa59f6f959e503b09 |
| institution | Kabale University |
| issn | 2500-0535 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | INFRA-M |
| record_format | Article |
| series | Solar-Terrestrial Physics |
| spelling | doaj-art-345d4bee98d04e4aa59f6f959e503b092025-08-20T03:25:00ZengINFRA-MSolar-Terrestrial Physics2500-05352025-03-011113610.12737/stp-111202501Effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphereGrigoryev Victor0Ermakova Lyudmila1Institute of Solar-Terrestrial Physics SB RASInstitute of Solar-Terrestrial Physics SB RASUsing SDO/HMI data, we have studied the dynamics of small-scale magnetic field elements in the photosphere during the formation of small active region USAF/NOAA 12761. The choice of this region is due to the fact that it formed near the central meridian at the minimum of the 11-year solar activity cycle in the absence of strong background magnetic fields. It has been established that two days before the formation of the first pores, the initially observed small-scale structure of the magnetic field forms chains of elements of both polarities. The structure of the chains creates a stable polarity dividing line (PIL). During the first day, the orientation of PIL changes from quasi-latitudinal to quasi-meridional. After comparing observations with a number of theoretical models, we concluded that the observed dynamics of elements of magnetic chains is consistent with the models of emergence of a magnetic flux rope in the photosphere.http://doi.org/10.12737/stp-111202501magnetic field active regions |
| spellingShingle | Grigoryev Victor Ermakova Lyudmila Effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphere Solar-Terrestrial Physics magnetic field active regions |
| title | Effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphere |
| title_full | Effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphere |
| title_fullStr | Effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphere |
| title_full_unstemmed | Effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphere |
| title_short | Effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphere |
| title_sort | effects of a twisted magnetic rope at the stage of the appearance of a new active region in the photosphere |
| topic | magnetic field active regions |
| url | http://doi.org/10.12737/stp-111202501 |
| work_keys_str_mv | AT grigoryevvictor effectsofatwistedmagneticropeatthestageoftheappearanceofanewactiveregioninthephotosphere AT ermakovalyudmila effectsofatwistedmagneticropeatthestageoftheappearanceofanewactiveregioninthephotosphere |