中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
DOI10.3847/1538-4357/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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