PMO OpenIR  > 宇宙伽马暴、中子星及相关物理研究团组
Comparisons of CME Morphological Characteristics Derived from Five 3D Reconstruction Methods
Feng, L.1,2; Inhester, B.2; Mierla, M.3,4
2013
Source PublicationSOLAR PHYSICS
ISSN0038-0938
Volume282Issue:1Pages:221-238
Corresponding AuthorFeng, L (reprint author), Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China. Email: lfeng@pmo.ac.cn ; binhest@mps.mpg.de ; marilena@geodin.ro
AbstractWe compare different methods to reconstruct three-dimensional (3D) coronal mass ejection (CME) morphology. The explored methods include geometric localisation, mask fitting, forward modelling, polarisation ratio, and local correlation tracking plus triangulation. These five methods are applied to the same CME event that occurred on 7 August 2010. Their corresponding results are presented and compared, especially in their propagation direction and spatial extent in 3D. We find that the mask fitting and geometric localisation methods produce consistent results. Reconstructions including three-view observations are more precise than reconstructions done with only two views. Compared to the forward modelling method, in which an a priori shape of the CME geometry is assumed, the mask fitting has more flexibility. The polarisation ratio method makes use of the Thomson scattering geometry. We find that spatially the 3D CME derived from the mask fitting lies mostly in the overlap region obtained with the polarisation method using data from STEREO. In addition, the mask fitting can help resolve the front/back ambiguity inherent in the polarisation ratio method. However, the local correlation tracking plus triangulation did not show consistent results with the other four methods. This method performed poorly, primarily because the two STEREO spacecraft had a large angular separation. Under these circumstances, it is difficult to identify points taken from independent images that correspond to the same physical feature. Excluding the local correlation tracking method, the latitude of the CME's centre of gravity derived from the other methods deviates within 1(a similar to), and the longitude differs within 19 degrees.
KeywordCorona, Structures Coronal Mass Ejections, Initiation And Propagation
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11207-012-0143-1
WOS KeywordCORONAL MASS EJECTIONS ; GEOMETRIC LOCALIZATION ; STEREO ; VIEWPOINTS ; MISSION ; LASCO
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000312132800013
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9884
Collection宇宙伽马暴、中子星及相关物理研究团组
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany
3.Acad Romana, Inst Geodynam, Bucharest 020032 37, Romania
4.Royal Observ Belgium, B-1180 Brussels, Belgium
Recommended Citation
GB/T 7714
Feng, L.,Inhester, B.,Mierla, M.. Comparisons of CME Morphological Characteristics Derived from Five 3D Reconstruction Methods[J]. SOLAR PHYSICS,2013,282(1):221-238.
APA Feng, L.,Inhester, B.,&Mierla, M..(2013).Comparisons of CME Morphological Characteristics Derived from Five 3D Reconstruction Methods.SOLAR PHYSICS,282(1),221-238.
MLA Feng, L.,et al."Comparisons of CME Morphological Characteristics Derived from Five 3D Reconstruction Methods".SOLAR PHYSICS 282.1(2013):221-238.
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