High-resolution Observations of a Small-scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model
An analytical cancellation nanoflare model has recently been established to show the fundamental role that ubiquitous small-scale cancellation nanoflares play in solar atmospheric heating. Although this model is well supported by simulations, observational evidence is needed to deepen our understand...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/adca3a |
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| author | Zehao Tang Yuandeng Shen Chengrui Zhou Surui Yao Dongxu Liu |
| author_facet | Zehao Tang Yuandeng Shen Chengrui Zhou Surui Yao Dongxu Liu |
| author_sort | Zehao Tang |
| collection | DOAJ |
| description | An analytical cancellation nanoflare model has recently been established to show the fundamental role that ubiquitous small-scale cancellation nanoflares play in solar atmospheric heating. Although this model is well supported by simulations, observational evidence is needed to deepen our understanding of cancellation nanoflares. We present observations of a small-scale cancellation nanoflare event, analyzing its magnetic topology evolution, triggers, and physical parameters. Using coordinated observations from the Solar Dynamics Observatory and Goode Solar Telescope, we identify a photospheric flow-driven cancellation event with a flux cancellation rate of ∼10 ^15 Mx s ^−1 and a heating rate of 8.7 × 10 ^6 erg cm ^−2 s ^−1 . The event shows the characteristic transition from π -shaped to X-shaped magnetic configuration before the formation of a 2″ current sheet, closely matching model predictions. This event provides critical observational support for the cancellation nanoflare model and its role in solar atmospheric heating. |
| format | Article |
| id | doaj-art-7606d01219a54026b14c69ae3c2e4c94 |
| institution | Kabale University |
| issn | 2041-8205 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj-art-7606d01219a54026b14c69ae3c2e4c942025-08-20T03:49:37ZengIOP PublishingThe Astrophysical Journal Letters2041-82052025-01-019851L1110.3847/2041-8213/adca3aHigh-resolution Observations of a Small-scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare ModelZehao Tang0Yuandeng Shen1https://orcid.org/0000-0001-9493-4418Chengrui Zhou2Surui Yao3Dongxu Liu4https://orcid.org/0009-0008-3025-8842Yunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People’s Republic of China ; ydshen@hit.edu.cn; University of Chinese , Academy of Sciences, Beijing, 100049, People’s Republic of ChinaState Key Laboratory of Solar Activity and Space Weather, School of Aerospace, Harbin Institute of Technology, Shenzhen 518055, People’s Republic of China; Shenzhen Key Laboratory of Numerical Prediction for Space Storm, Harbin Institute of Technology , Shenzhen 518055, People’s Republic of ChinaYunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People’s Republic of China ; ydshen@hit.edu.cn; University of Chinese , Academy of Sciences, Beijing, 100049, People’s Republic of ChinaYunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People’s Republic of China ; ydshen@hit.edu.cn; University of Chinese , Academy of Sciences, Beijing, 100049, People’s Republic of ChinaYunnan Observatories, Chinese Academy of Sciences , Kunming 650216, People’s Republic of China ; ydshen@hit.edu.cn; University of Chinese , Academy of Sciences, Beijing, 100049, People’s Republic of ChinaAn analytical cancellation nanoflare model has recently been established to show the fundamental role that ubiquitous small-scale cancellation nanoflares play in solar atmospheric heating. Although this model is well supported by simulations, observational evidence is needed to deepen our understanding of cancellation nanoflares. We present observations of a small-scale cancellation nanoflare event, analyzing its magnetic topology evolution, triggers, and physical parameters. Using coordinated observations from the Solar Dynamics Observatory and Goode Solar Telescope, we identify a photospheric flow-driven cancellation event with a flux cancellation rate of ∼10 ^15 Mx s ^−1 and a heating rate of 8.7 × 10 ^6 erg cm ^−2 s ^−1 . The event shows the characteristic transition from π -shaped to X-shaped magnetic configuration before the formation of a 2″ current sheet, closely matching model predictions. This event provides critical observational support for the cancellation nanoflare model and its role in solar atmospheric heating.https://doi.org/10.3847/2041-8213/adca3aMagnetohydrodynamicsSolar magnetic reconnectionSolar chromosphereSolar magnetic fields |
| spellingShingle | Zehao Tang Yuandeng Shen Chengrui Zhou Surui Yao Dongxu Liu High-resolution Observations of a Small-scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model The Astrophysical Journal Letters Magnetohydrodynamics Solar magnetic reconnection Solar chromosphere Solar magnetic fields |
| title | High-resolution Observations of a Small-scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model |
| title_full | High-resolution Observations of a Small-scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model |
| title_fullStr | High-resolution Observations of a Small-scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model |
| title_full_unstemmed | High-resolution Observations of a Small-scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model |
| title_short | High-resolution Observations of a Small-scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model |
| title_sort | high resolution observations of a small scale cancellation nanoflare supporting evidence for the cancellation nanoflare model |
| topic | Magnetohydrodynamics Solar magnetic reconnection Solar chromosphere Solar magnetic fields |
| url | https://doi.org/10.3847/2041-8213/adca3a |
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