Propagating and Stationary Bright Knots in the Quiet Sun
文献类型:期刊论文
作者 | Zhang, Jun1; Hou, Yijun2; Fang, Yue1; Chen, Feng3; Li, Ting2; Yan XL(闫晓理)4; Ding, Tao1; Song, Zhiping1; Xiang YY(向永源)4; Liu Z(刘忠)4 |
刊名 | ASTROPHYSICAL JOURNAL LETTERS |
出版日期 | 2023 |
卷号 | 942期号:1 |
ISSN号 | 2041-8205 |
关键词 | Quiet solar corona Solar extreme ultraviolet emission Solar magnetic fields Solar chromospheric heating |
DOI | 10.3847/2041-8213/aca97b |
产权排序 | 第4完成单位 |
文献子类 | Article |
英文摘要 | The question of what heats the solar chromosphere and corona remains one of the most important puzzles in solar physics and astrophysics. Up to now, two mechanisms are considered to work in heating the chromosphere and corona: magnetic reconnection and wave (turbulent flow) dissipation. But it is still not understood which mechanism is dominant. To solve the heating problem, one important topic at this stage is that we should understand how much energy is contributing from the two mechanisms respectively to the heating. In the quiet Sun, the thermal energy signal is observed as brightenings. Here we report two kinds of bright knots with a total of 3605 in the chromosphere of the quiet Sun, using the data from the New Vacuum Solar Telescope at Yunnan Observatories. The first kind of 1537 bright knots, which is first detected in chromospheric fibrils where waves and their dissipation are ubiquitous, propagates along these fibrils with velocities from 5 to 69 km s(-1). The second kind of 2068 knots keeps stationary, and always appears at the footpoints of these fibrils where network magnetic fields exist, suggesting that magnetic reconnection locally produces these stationary knots. Based on the observations of thousands of bright knots, we display the different distribution patterns of the two kinds of bright knots in the quiet Sun, and deduce that half of the energy for heating the chromosphere is supplied by wave dissipation, and the other half by magnetic reconnection. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | EUV TRANSIENT BRIGHTENINGS ; ENERGY-DISTRIBUTION ; SOLAR ; OSCILLATIONS ; ENERGETICS ; WAVES ; TURBULENCE ; REGION ; MODEL ; EIT |
资助项目 | National Natural Science Foundation of China[11790304] ; National Natural Science Foundation of China[12073001] ; National Natural Science Foundation of China[11903050] ; National Natural Science Foundation of China[12222306] ; National Natural Science Foundation of China[11790300] ; Anhui Project[Z010118169] ; open topic of the Key Laboratory of Solar Activities of the Chinese Academy of Sciences[KLSA202116] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000905284800001 |
资助机构 | National Natural Science Foundation of China[11790304, 12073001, 11903050, 12222306, 11790300] ; Anhui Project[Z010118169] ; open topic of the Key Laboratory of Solar Activities of the Chinese Academy of Sciences[KLSA202116] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25714] |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Zhang, Jun |
作者单位 | 1.School of Physics and Optoelectronics Engineering, Anhui University, Hefei 230601, People's Republic of China; zjun@ahu.edu.cn; 2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; yijunhou@nao.cas.cn; 3.School of Astronomy and Space Science, Nanjing University, Nanjing 210023, People's Republic of China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China |
推荐引用方式 GB/T 7714 | Zhang, Jun,Hou, Yijun,Fang, Yue,et al. Propagating and Stationary Bright Knots in the Quiet Sun[J]. ASTROPHYSICAL JOURNAL LETTERS,2023,942(1). |
APA | Zhang, Jun.,Hou, Yijun.,Fang, Yue.,Chen, Feng.,Li, Ting.,...&Liu Z.(2023).Propagating and Stationary Bright Knots in the Quiet Sun.ASTROPHYSICAL JOURNAL LETTERS,942(1). |
MLA | Zhang, Jun,et al."Propagating and Stationary Bright Knots in the Quiet Sun".ASTROPHYSICAL JOURNAL LETTERS 942.1(2023). |
入库方式: OAI收割
来源:云南天文台
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