| Are Quasi-periodic Pulsations Independent of Loop Oscillations in Solar Flare? | |
Shi, Fanpeng1,2; Li, Dong1,2; Ning, Zongjun1,2; Guo YF(郭杨帆)3 ; Feng, Song4; Xu, Jun1,2
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2023-11-01 | |
| 卷号 | 958期号:1 |
| DOI | 10.3847/1538-4357/acf7c2 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 摘要 | We investigated oscillations in an M8.7 solar flare (SOL2014-10-22), including quasi-periodic pulsations (QPPs) in light curves and Doppler shift oscillations in the flare loops. Using Bayesian-based Markov Chain Monte Carlo, Fast Fourier Transform, and wavelet analysis method, QPPs were identified at microwave and hard X-ray wave bands during the impulsive phase, and the dominant period is 40-50 s. They should be associated with a repetitive energy release process, which accelerates nonthermal electrons periodically. On the other hand, we cannot rule out the possibility of the modulation of external waves because of the lower temporal resolution of spectroscopic observation. However, almost immediately after QPPs, a minority of flare loops display their Doppler velocity oscillations with a significant period of similar to 4 minutes, which are observed by the Interface Region Imaging Spectrograph at the coronal line Fe xxi 1354.08 angstrom (T similar to 107 K), while its intensity and width show no similar oscillation. Our observations suggest that flare loop oscillations are most likely the fast kink mode waves with a phase speed of similar to 840 km s-1. The magnetic field strength in flare loops was estimated to be 54-69 G via the coronal seismology. The QPPs and loop oscillation could be independent of each other in this event. |
| 资助项目 | We thank the referee for the valuable comments. We appreciate the teams of NoRP, GOES, Fermi, SDO, and IRIS for their open data use policy. This work is funded by the National Key Ramp;D Program of China 2021YFA1600502 (2021YFA1600500), NSFC under grants[2021YFA1600502]; We thank the referee for the valuable comments. We appreciate the teams of NoRP, GOES, Fermi, SDO, and IRIS for their open data use policy. This work is funded by the National Key Ramp;D Program of China 2021YFA1600502 (2021YFA1600500), NSFC under grants[2021YFA1600500]; National Key Ramp;D Program of China[11973092]; National Key Ramp;D Program of China[12073081]; NSFC[XDA15052200]; NSFC[XDA15320301]; CAS Strategic Pioneer Program on Space Science[BK20211402]; Surface Project of Jiangsu Province |
| 项目资助者 | We thank the referee for the valuable comments. We appreciate the teams of NoRP, GOES, Fermi, SDO, and IRIS for their open data use policy. This work is funded by the National Key Ramp ; D Program of China 2021YFA1600502 (2021YFA1600500), NSFC under grants[2021YFA1600502, 2021YFA1600500] ; National Key Ramp ; D Program of China[11973092, 12073081] ; NSFC[XDA15052200, XDA15320301] ; CAS Strategic Pioneer Program on Space Science[BK20211402] ; Surface Project of Jiangsu Province |
| 语种 | 英语 |
| 学科领域 | 天文学 |
| 文章类型 | Article |
| 出版者 | IOP Publishing Ltd |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:001099215500001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | HARD X-RAY ; DOPPLER-SHIFT OSCILLATIONS ; CORONAL LOOPS ; CHROMOSPHERIC EVAPORATION ; TRANSVERSE OSCILLATIONS ; KINK OSCILLATIONS ; STELLAR FLARES ; IMAGING OBSERVATIONS ; SPECTRAL EVOLUTION ; MAGNETIC-FIELD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/26448 |
| 专题 | 射电天文研究组 |
| 作者单位 | 1.Key Laboratory of Dark Matter and Space Science, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, People's Republic of China
[email protected]; 2.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People's Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 4.Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Shi, Fanpeng,Li, Dong,Ning, Zongjun,et al. Are Quasi-periodic Pulsations Independent of Loop Oscillations in Solar Flare?[J]. ASTROPHYSICAL JOURNAL,2023,958(1). |
| APA | Shi, Fanpeng,Li, Dong,Ning, Zongjun,郭杨帆,Feng, Song,&Xu, Jun.(2023).Are Quasi-periodic Pulsations Independent of Loop Oscillations in Solar Flare?.ASTROPHYSICAL JOURNAL,958(1). |
| MLA | Shi, Fanpeng,et al."Are Quasi-periodic Pulsations Independent of Loop Oscillations in Solar Flare?".ASTROPHYSICAL JOURNAL 958.1(2023). |
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| Are Quasi-periodic P（3972KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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