Quantifying the Propagation of Fast Coronal Mass Ejections from the Sun to Interplanetary Space by Combining Remote Sensing and Multi-point In Situ Observations
文献类型:期刊论文
作者 | Zhao, XW; Liu, YD; Hu, HD; Wang, R |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2019 |
卷号 | 822期号:2页码:122 |
ISSN号 | 0004-637X |
关键词 | Solar-wind White-light Radio Kinematics Evolution Cme Temperature Ulysses Shocks |
DOI | 10.3847/1538-4357/ad379b |
英文摘要 | In order to have a comprehensive view of the propagation and evolution of coronal mass ejections (CMEs) from the Sun to deep interplanetary space beyond 1 au, we carry out a kinematic analysis of seven CMEs in solar cycle 23. The events are required to have coordinated coronagraph observations, interplanetary type II radio bursts, and multi-point in situ measurements at the Earth and Ulysses. A graduated cylindrical shell model, an analytical model without free parameters, and a magnetohydrodynamic model are used to derive CME kinematics near the Sun, to quantify the CME/shock propagation in theSun-Earth space, and to connect in situ signatures at the Earth and Ulysses, respectively. We find that each of the seven CME-driven shocks experienced a major deceleration before reaching 1 au and thereafter propagated with a gradual deceleration from the Earth to larger distances. The resulting CME/shock propagation profile for each case is roughly consistent with all the data, which verifies the usefulness of the simple analytical model for CME/shock propagation in the heliosphere. The statistical analysis of CME kinematics indicates a tendency that the faster the CME, the larger the deceleration, and theshorter the deceleration time period within 1 au. For several of these events, the associated geomagnetic storms were mainly caused by the southward magnetic fields in the sheath region. In particular, the interaction between a CME-driven shock and a preceding ejecta significantly enhanced the pre-existing southward magnetic fields and gave rise to a severe complex geomagnetic storm. |
源URL | [http://ir.nssc.ac.cn/handle/122/7084] |
专题 | 国家空间科学中心_空间科学部 |
推荐引用方式 GB/T 7714 | Zhao, XW; Liu, YD; Hu, HD; Wang, R. Quantifying the Propagation of Fast Coronal Mass Ejections from the Sun to Interplanetary Space by Combining Remote Sensing and Multi-point In Situ Observations[J]. ASTROPHYSICAL JOURNAL,2019,822(2):122. |
APA | Zhao, XW; Liu, YD; Hu, HD; Wang, R.(2019).Quantifying the Propagation of Fast Coronal Mass Ejections from the Sun to Interplanetary Space by Combining Remote Sensing and Multi-point In Situ Observations.ASTROPHYSICAL JOURNAL,822(2),122. |
MLA | Zhao, XW; Liu, YD; Hu, HD; Wang, R."Quantifying the Propagation of Fast Coronal Mass Ejections from the Sun to Interplanetary Space by Combining Remote Sensing and Multi-point In Situ Observations".ASTROPHYSICAL JOURNAL 822.2(2019):122. |
入库方式: OAI收割
来源:国家空间科学中心
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