PMO OpenIR  > 太阳高能及相关物理过程研究团组
RADIAL FLOW PATTERN OF A SLOW CORONAL MASS EJECTION
Feng, Li1,2; Inhester, Bernd2; Gan, Weiqun1
2015-06-01
Source PublicationASTROPHYSICAL JOURNAL
Volume805Issue:2Pages:113
AbstractHeight-time plots of the leading edge of coronal mass ejections (CMEs) have often been used to study CME kinematics. We propose a new method to analyze the CME kinematics in more detail by determining the radial mass transport process throughout the entire CME. Thus, our method is able to estimate not only the speed of the CME front but also the radial flow speed inside the CME. We have applied this method to a slow CME with an average leading edge speed of about 480 km s(-1). In the Lagrangian frame, the speeds of the individual CME mass elements stay almost constant within 2 and 15 R-S, the range over which we analyzed the CME. Hence, we have no evidence of net radial forces acting on parts of the CME in this range or of a pile up of mass ahead of the CME. We find evidence that the leading edge trajectory obtained by tie-pointing may gradually lag behind the Lagrangian front-side trajectories derived from our analysis. Our results also allow a much more precise estimate of the CME energy. Compared with conventional estimates using the CME total mass and leading edge motion, we find that the latter may overestimate the kinetic energy and the gravitational potential energy.
KeywordHydrodynamics Sun: Coronal Mass Ejections (Cmes) Sun: Evolution
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/805/2/113
WOS KeywordSTEREO
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000356715400028
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14830
Collection太阳高能及相关物理过程研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany
Recommended Citation
GB/T 7714
Feng, Li,Inhester, Bernd,Gan, Weiqun. RADIAL FLOW PATTERN OF A SLOW CORONAL MASS EJECTION[J]. ASTROPHYSICAL JOURNAL,2015,805(2):113.
APA Feng, Li,Inhester, Bernd,&Gan, Weiqun.(2015).RADIAL FLOW PATTERN OF A SLOW CORONAL MASS EJECTION.ASTROPHYSICAL JOURNAL,805(2),113.
MLA Feng, Li,et al."RADIAL FLOW PATTERN OF A SLOW CORONAL MASS EJECTION".ASTROPHYSICAL JOURNAL 805.2(2015):113.
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