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Velocity Distribution Associated With EUV Disturbances Caused by Eruptive MFR
Mei ZX(梅志星)1,2; Cai, Qiangwei3; Ye J(叶景)1,2; Li Y(李燕)1,2; Zhu BJ(朱伯靖)1,2,4
Source PublicationFRONTIERS IN ASTRONOMY AND SPACE SCIENCES
2021-12-20
Volume8
DOI10.3389/fspas.2021.771882
Contribution Rank第1完成单位
Indexed BySCI
Keywordcoronal mass ejections (CMEs) MHD shock waves instabilities magnetic field plasmas
Abstract

Extreme ultraviolet (EUV) disturbances are ubiquitous during eruptive phenomena like solar flare and Coronal Mass Ejection (CME). In this work, we have performed a three-dimensional (3D) magnetohydrodynamic numerical simulation of CME with an analytic magnetic fluxrope (MFR) to study the complex velocity distribution associated with EUV disturbances. When the MFR erupts upward, a fast shock (FS) appears as a 3D dome, followed by outward moving plasma. In the center of the eruptive source region, an expanding CME bubble and a current sheet continuously grow, both of which are filled by inward moving plasma. At the flanks of the CME bubble, a complex velocity distribution forms because of the dynamical interaction between inward and outward plasma, leading to the formation of slow shock (SS) and velocity separatrix (VS). We note two types of vortices near the VS, not mentioned in the preceding EUV disturbance simulations. In first type of vortex, the plasma converges toward the vortex center, and in the second type, the plasma spreads out from the center. The forward modeling method has been used to create the synthetic SDO/AIA images, in which the eruptive MFR and the FS appear as bright structures. Furthermore, we also deduce the plasma velocity field by utilizing the Fourier local correlation tracking method on the synthetic images. However, we do not observe the VS, the SS, and the two types of vortices in this deduced velocity field.

Funding ProjectN/A
Funding OrganizationN/A
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherFRONTIERS MEDIA SA
Publication PlaceAVENUE DU TRIBUNAL FEDERAL 34, LAUSANNE, CH-1015, SWITZERLAND
ISSN2296-987X
URL查看原文
WOS IDWOS:000738883600001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTION ; NUMERICAL EXPERIMENTS ; EIT WAVES ; SIMULATION ; SCHEMES ; MORETON ; MODEL
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24757
Collection太阳物理研究组
Corresponding AuthorMei ZX(梅志星)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China;
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, China;
3.Institute of Space Physics, Luoyang Normal University, Luoyang, China;
4.University of Chinese Academy of Sciences, Beijing, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Mei ZX,Cai, Qiangwei,Ye J,et al. Velocity Distribution Associated With EUV Disturbances Caused by Eruptive MFR[J]. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,2021,8.
APA Mei ZX,Cai, Qiangwei,Ye J,Li Y,&Zhu BJ.(2021).Velocity Distribution Associated With EUV Disturbances Caused by Eruptive MFR.FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,8.
MLA Mei ZX,et al."Velocity Distribution Associated With EUV Disturbances Caused by Eruptive MFR".FRONTIERS IN ASTRONOMY AND SPACE SCIENCES 8(2021).
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