The Three-part Structure of a Filament-unrelated Solar Coronal Mass Ejection
文献类型：期刊论文
| 作者 | Li, B.2,3; Zhang, J.6; Chen, Y.2,3 ; Song, H. Q.2,3,7; Cheng, X.1; Li, L. P.7; Wang, B.2,3; Li, G.4,5; Hu, Q.4,5
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2017-10-10 |
| 卷号 | 848期号:1 |
| 关键词 | Magnetic Reconnection Sun: Coronal Mass Ejections (Cmes) Sun: Flares |
| DOI | 10.3847/1538-4357/aa8d1a |
| 文献子类 | Article |
| 英文摘要 | Coronal mass ejections (CMEs) often exhibit the typical three-part structure in the corona when observed with white-light coronagraphs, i.e., the bright leading front, dark cavity, and bright core, corresponding to a high-low-high density sequence. As CMEs result from eruptions of magnetic flux ropes (MFRs), which can possess either lower (e.g., coronal-cavity MFRs) or higher (e.g., hot-channel MFRs) density compared to their surroundings in the corona, the traditional opinion regards the three-part structure as the manifestations of coronal plasma pileup (high density), coronal-cavity MFR (low density), and filament (high density) contained in the trailing part of MFR, respectively. In this paper, we demonstrate that filament-unrelated CMEs can also exhibit the classical three-part structure. The observations were made from different perspectives through an event that occurred on 2011 October 4. The CME cavity corresponds to the low-density zone between the leading front and the high-density core, and it is obvious in the low corona and gradually becomes fuzzy when propagating outward. The bright core corresponds to a high-density structure that is suggested to be an erupting MFR. The MFR is recorded from both edge-on and face-on perspectives, exhibiting different morphologies that are due to projection effects. We stress that the zone (MFR) with lower (higher) density in comparison to the surroundings can appear as the dark cavity (bright core) when observed through white-light coronagraphs, which is not necessarily the coronal-cavity MFR (erupted filament). |
| WOS关键词 | CURRENT SHEET ; MAGNETIC RECONNECTION ; MORPHOLOGY ; ERUPTIONS ; CAVITIES ; ARCADES ; LASCO ; SHOCK ; CME |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000412575600001 |
| 资助机构 | Shandong Provincial Natural Science Foundation(JQ201710) ; Shandong Provincial Natural Science Foundation(JQ201710) ; Joint Research Fund in Astronomy(U1731102) ; Joint Research Fund in Astronomy(U1731102) ; NSFC grant(41331068 ; NSFC grant(41331068 ; open research program of the CAS Key Laboratory of Solar Activity(KLSA201605) ; open research program of the CAS Key Laboratory of Solar Activity(KLSA201605) ; US NSF(AGS-1249270) ; US NSF(AGS-1249270) ; NSF(AGS-1156120) ; NSF(AGS-1156120) ; 41774180) ; 41774180) ; Shandong Provincial Natural Science Foundation(JQ201710) ; Shandong Provincial Natural Science Foundation(JQ201710) ; Joint Research Fund in Astronomy(U1731102) ; Joint Research Fund in Astronomy(U1731102) ; NSFC grant(41331068 ; NSFC grant(41331068 ; open research program of the CAS Key Laboratory of Solar Activity(KLSA201605) ; open research program of the CAS Key Laboratory of Solar Activity(KLSA201605) ; US NSF(AGS-1249270) ; US NSF(AGS-1249270) ; NSF(AGS-1156120) ; NSF(AGS-1156120) ; 41774180) ; 41774180) |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/20217]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 2.Shandong Univ, Inst Space Sci, Weihai 264209, Shandong, Peoples R China 3.Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Shandong, Peoples R China 4.Univ Alabama, CSPAR, Huntsville, AL 35899 USA 5.Univ Alabama, Dept Space Sci, Huntsville, AL 35899 USA 6.George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA 7.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, B.,Zhang, J.,Chen, Y.,et al. The Three-part Structure of a Filament-unrelated Solar Coronal Mass Ejection[J]. ASTROPHYSICAL JOURNAL,2017,848(1). |
| APA | Li, B..,Zhang, J..,Chen, Y..,Song, H. Q..,Cheng, X..,...&Hu, Q..(2017).The Three-part Structure of a Filament-unrelated Solar Coronal Mass Ejection.ASTROPHYSICAL JOURNAL,848(1). |
| MLA | Li, B.,et al."The Three-part Structure of a Filament-unrelated Solar Coronal Mass Ejection".ASTROPHYSICAL JOURNAL 848.1(2017). |
入库方式： OAI收割
来源：国家天文台
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