RADIAL FLOW PATTERN OF A SLOW CORONAL MASS EJECTION

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 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, Bernd 2; Gan, Weiqun1
刊名	ASTROPHYSICAL JOURNAL
	2015-06-01
卷号	805 期号:2 页码:113
关键词	hydrodynamics Sun: coronal mass ejections (CMEs) Sun: evolution
英文摘要	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.
学科主题	天文和天体物理
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	STEREO
收录类别	SCI
语种	英语
WOS记录号	WOS:000356715400028
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/14830]
专题	紫金山天文台_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
推荐引用方式 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.