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RADIAL FLOW PATTERN OF A SLOW CORONAL MASS EJECTION
Feng, Li1,2; Inhester, Bernd2; Gan, Weiqun1
2015-06-01
发表期刊ASTROPHYSICAL JOURNAL
卷号805期号:2页码:113
摘要Height-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.
文章类型Article
关键词Hydrodynamics Sun: Coronal Mass Ejections (Cmes) Sun: Evolution
WOS标题词Science & Technology ; Physical Sciences
学科领域天文和天体物理
DOI10.1088/0004-637X/805/2/113
关键词[WOS]STEREO
收录类别SCI
语种英语
资助项目PMO_LIB-IR
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000356715400028
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/14830
专题太阳高能及相关物理过程研究团组
作者单位1.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
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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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