High-Resolution Observations of a Small-Scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866910917162172416 |
|---|---|
| author | Tang, Zehao Shen, Yuandeng Zhou, Chengrui Yao, Surui Liu, Dongxu |
| author_facet | Tang, Zehao Shen, Yuandeng Zhou, Chengrui Yao, Surui Liu, Dongxu |
| contents | 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 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 and a heating rate of 8.7 x 10^6 erg cm^{-2} s^{-1}. The event shows the characteristic transition from $π$-shaped to X-shaped magnetic configuration before forming a two arcsecs 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 | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_02396 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-Resolution Observations of a Small-Scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model Tang, Zehao Shen, Yuandeng Zhou, Chengrui Yao, Surui Liu, Dongxu Solar and Stellar Astrophysics Space Physics 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 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 and a heating rate of 8.7 x 10^6 erg cm^{-2} s^{-1}. The event shows the characteristic transition from $π$-shaped to X-shaped magnetic configuration before forming a two arcsecs current sheet, closely matching model predictions. This event provides critical observational support for the cancellation nanoflare model and its role in solar atmospheric heating. |
| title | High-Resolution Observations of a Small-Scale Cancellation Nanoflare: Supporting Evidence for the Cancellation Nanoflare Model |
| topic | Solar and Stellar Astrophysics Space Physics |
| url | https://arxiv.org/abs/2504.02396 |