Polarisation of decayless kink oscillations of solar coronal loops
Abstract Decayless kink oscillations of plasma loops in the solar corona may contain an answer to the enigmatic problem of solar and stellar coronal heating. The polarisation of the oscillations gives us a unique information about their excitation mechanisms and energy supply. However, unambiguous d...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-09-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-41029-8 |
| _version_ | 1797558003969294336 |
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| author | Sihui Zhong Valery M. Nakariakov Dmitrii Y. Kolotkov Lakshmi Pradeep Chitta Patrick Antolin Cis Verbeeck David Berghmans |
| author_facet | Sihui Zhong Valery M. Nakariakov Dmitrii Y. Kolotkov Lakshmi Pradeep Chitta Patrick Antolin Cis Verbeeck David Berghmans |
| author_sort | Sihui Zhong |
| collection | DOAJ |
| description | Abstract Decayless kink oscillations of plasma loops in the solar corona may contain an answer to the enigmatic problem of solar and stellar coronal heating. The polarisation of the oscillations gives us a unique information about their excitation mechanisms and energy supply. However, unambiguous determination of the polarisation has remained elusive. Here, we show simultaneous detection of a 4-min decayless kink oscillation from two non-parallel lines-of-sights, separated by about 104∘, provided by unique combination of the High Resolution Imager on Solar Orbiter and the Atmospheric Imaging Assembly on Solar Dynamics Observatory. The observations reveal a horizontal or weakly oblique linear polarisation of the oscillation. This conclusion is based on the comparison of observational results with forward modelling of the observational manifestation of various kinds of polarisation of kink oscillations. The revealed polarisation favours the sustainability of these oscillations by quasi-steady flows which may hence supply the energy for coronal heating. |
| first_indexed | 2024-03-10T17:24:17Z |
| format | Article |
| id | doaj.art-54166b5121da480aa3ef1bd3fba86ff0 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:24:17Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-54166b5121da480aa3ef1bd3fba86ff02023-11-20T10:13:36ZengNature PortfolioNature Communications2041-17232023-09-0114111110.1038/s41467-023-41029-8Polarisation of decayless kink oscillations of solar coronal loopsSihui Zhong0Valery M. Nakariakov1Dmitrii Y. Kolotkov2Lakshmi Pradeep Chitta3Patrick Antolin4Cis Verbeeck5David Berghmans6Centre for Fusion, Space and Astrophysics, Physics Department, University of WarwickCentre for Fusion, Space and Astrophysics, Physics Department, University of WarwickCentre for Fusion, Space and Astrophysics, Physics Department, University of WarwickMax Planck Institute for Solar System ResearchDepartment of Mathematics, Physics and Electrical Engineering, Northumbria UniversitySolar-Terrestrial Centre of Excellence - SIDC, Royal Observatory of BelgiumSolar-Terrestrial Centre of Excellence - SIDC, Royal Observatory of BelgiumAbstract Decayless kink oscillations of plasma loops in the solar corona may contain an answer to the enigmatic problem of solar and stellar coronal heating. The polarisation of the oscillations gives us a unique information about their excitation mechanisms and energy supply. However, unambiguous determination of the polarisation has remained elusive. Here, we show simultaneous detection of a 4-min decayless kink oscillation from two non-parallel lines-of-sights, separated by about 104∘, provided by unique combination of the High Resolution Imager on Solar Orbiter and the Atmospheric Imaging Assembly on Solar Dynamics Observatory. The observations reveal a horizontal or weakly oblique linear polarisation of the oscillation. This conclusion is based on the comparison of observational results with forward modelling of the observational manifestation of various kinds of polarisation of kink oscillations. The revealed polarisation favours the sustainability of these oscillations by quasi-steady flows which may hence supply the energy for coronal heating.https://doi.org/10.1038/s41467-023-41029-8 |
| spellingShingle | Sihui Zhong Valery M. Nakariakov Dmitrii Y. Kolotkov Lakshmi Pradeep Chitta Patrick Antolin Cis Verbeeck David Berghmans Polarisation of decayless kink oscillations of solar coronal loops Nature Communications |
| title | Polarisation of decayless kink oscillations of solar coronal loops |
| title_full | Polarisation of decayless kink oscillations of solar coronal loops |
| title_fullStr | Polarisation of decayless kink oscillations of solar coronal loops |
| title_full_unstemmed | Polarisation of decayless kink oscillations of solar coronal loops |
| title_short | Polarisation of decayless kink oscillations of solar coronal loops |
| title_sort | polarisation of decayless kink oscillations of solar coronal loops |
| url | https://doi.org/10.1038/s41467-023-41029-8 |
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