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Transition-region explosive events produced by plasmoid instability
Li, Dong1,2
2019-05-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume19Issue:5Pages:10
Corresponding AuthorLi, Dong(lidong@pmo.ac.cn)
AbstractMagnetic 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.
KeywordSun: transition region line: profiles methods: numerical magnetohydrodynamics (MHD)
DOI10.1088/1674-4527/19/5/67
WOS KeywordMAGNETIC RECONNECTION ; SOLAR CHROMOSPHERE ; QUIET SUN ; PARTICLE-ACCELERATION ; BRIGHT POINTS ; PLUTO CODE ; ERUPTION ; FLARE ; JETS ; ENERGETICS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000467595300005
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/24651
Collection中国科学院紫金山天文台
Corresponding AuthorLi, Dong
Affiliation1.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
Recommended Citation
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.
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