transitionregionexplosiveeventsproducedbyplasmoidinstability | |
Li Dong | |
刊名 | researchinastronomyandastrophysics |
2019 | |
卷号 | 19期号:5 |
ISSN号 | 1674-4527 |
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. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://libir.pmo.ac.cn/handle/332002/31971] |
专题 | 中国科学院紫金山天文台 |
作者单位 | 中国科学院紫金山天文台 |
推荐引用方式 GB/T 7714 | Li Dong. transitionregionexplosiveeventsproducedbyplasmoidinstability[J]. researchinastronomyandastrophysics,2019,19(5). |
APA | Li Dong.(2019).transitionregionexplosiveeventsproducedbyplasmoidinstability.researchinastronomyandastrophysics,19(5). |
MLA | Li Dong."transitionregionexplosiveeventsproducedbyplasmoidinstability".researchinastronomyandastrophysics 19.5(2019). |
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