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Effects of Coronal Density and Magnetic Field Distributions on a Global Solar EUV Wave
Hu, Huidong; Liu, Ying D.; Zhu, Bei; Peter, Hardi; He, Wen; Wang, Rui; Yang, Zhongwei
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2019
Volume878Issue:2Pages:106
DOI10.3847/1538-4357/ab2055
ISSN0004-637X
Language英语
KeywordSun: activity Sun: corona Sun: coronal mass ejections (CMEs) Sun: magnetic fields waves
AbstractWe investigate a global extreme-ultraviolet (EUV) wave associated with a coronal mass ejection (CME)-driven shock on 2017 September 10. The EUV wave is transmitted by north- and south-polar coronal holes (CHs), which is observed by the Solar Dynamics Observatory (SDO) and Solar Terrestrial Relations Observatory A (STEREO-A) from opposite sides of the Sun. We obtain key findings on how the EUV wave interacts with multiple coronal structures, and its connection with the CME-driven shock: (1) the transmitted EUV wave is still connected with the shock that is incurvated to the Sun, after the shock has reached the opposite side of the eruption; (2) the south CH transmitted EUV wave is accelerated inside an on-disk, low-density region with closed magnetic fields, which implies that an EUV wave can be accelerated in both open and closed magnetic field regions; (3) part of the primary EUV wavefront turns around a bright point (BP) with a bipolar magnetic structure when it approaches a dim, low-density filament channel near the BP; (4) the primary EUV wave is diffused and apparently halted near the boundaries of remote active regions (ARs) that are far from the eruption, and no obvious AR related secondary waves are detected; (5) the EUV wave extends to an unprecedented scale of similar to 360 degrees in latitudes, which is attributed to the polar CH transmission. These results provide insights into the effects of coronal density and magnetic field distributions on the evolution of an EUV wave, and into the connection between the EUV wave and the associated CME-driven shock.
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7062
Collection空间科学部
Recommended Citation
GB/T 7714
Hu, Huidong,Liu, Ying D.,Zhu, Bei,et al. Effects of Coronal Density and Magnetic Field Distributions on a Global Solar EUV Wave[J]. ASTROPHYSICAL JOURNAL,2019,878(2):106.
APA Hu, Huidong.,Liu, Ying D..,Zhu, Bei.,Peter, Hardi.,He, Wen.,...&Yang, Zhongwei.(2019).Effects of Coronal Density and Magnetic Field Distributions on a Global Solar EUV Wave.ASTROPHYSICAL JOURNAL,878(2),106.
MLA Hu, Huidong,et al."Effects of Coronal Density and Magnetic Field Distributions on a Global Solar EUV Wave".ASTROPHYSICAL JOURNAL 878.2(2019):106.
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