Transition-region explosive events produced by plasmoid instability
文献类型：期刊论文
| 作者 | Li, Dong1,2 |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 19期号:5页码:10 |
| 关键词 | Sun: transition region line: profiles methods: numerical magnetohydrodynamics (MHD) |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/19/5/67 |
| 通讯作者 | Li, Dong(lidong@pmo.ac.cn) |
| 英文摘要 | Magnetic reconnection is thought to be a key process in most solar eruptions. Thanks to high-resolution observations and simulations, the studied scale of the reconnection process has become smaller and smaller. Spectroscopic observations show that the reconnection site can be very small, which always exhibits a bright core and two extended wings with fast speeds, i.e., transition-region explosive events. In this paper, using the PLUTO code, we perform a 2-D magnetohydrodynamic simulation to investigate small-scale reconnection in double current sheets. Based on our simulation results, such as the line-of-sight velocity, number density and plasma temperature, we can synthesize the line profile of Si IV 1402.77 angstrom which is a well known emission line used to study transition-region explosive events on the Sun. The synthetic line profile of Si IV 1402.77 angstrom is complex with a bright core and two broad wings which can extend to nearly 200 kms(-1). Our simulation results suggest that the transition-region explosive events on the Sun are produced by plasmoid instability during small-scale magnetic reconnection. |
| WOS关键词 | MAGNETIC RECONNECTION ; SOLAR CHROMOSPHERE ; QUIET SUN ; PARTICLE-ACCELERATION ; BRIGHT POINTS ; PLUTO CODE ; ERUPTION ; FLARE ; JETS ; ENERGETICS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000467595300005 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/24650]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Li, Dong |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210034, Jiangsu, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Dong. Transition-region explosive events produced by plasmoid instability[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(5):10. |
| APA | Li, Dong.(2019).Transition-region explosive events produced by plasmoid instability.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(5),10. |
| MLA | Li, Dong."Transition-region explosive events produced by plasmoid instability".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.5(2019):10. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。