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题名: SOLAR ENERGETIC PARTICLE EVENT ASSOCIATED WITH THE 2012 JULY 23 EXTREME SOLAR STORM
作者: Zhu, Bei; Liu, Ying D.; Luhmann, Janet G.; Hu, Huidong; Wang, Rui; Yang, Zhongwei
作者部门: 空间科学部
通讯作者: Liu, YD (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China. ; Liu, YD (reprint author), Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China.
关键词: shock waves ; Sun: coronal mass ejections (CMEs) ; Sun: magnetic fields ; Sun: particle emission
刊名: ASTROPHYSICAL JOURNAL
ISSN号: 0004-637X
出版日期: 2016
卷号: 827, 期号:2, 页码:146
收录类别: SCI
项目资助者: Recruitment Program of Global Experts of China, NSFC [41374173] ; Specialized Research Fund for State Key Laboratories of China
英文摘要: We study the solar energetic particle (SEP) event associated with the 2012 July 23 extreme solar storm, for which Solar Terrestrial Relations Observatory (STEREO) and the spacecraft at L1 provide multi-point remote sensing and in situ observations. The extreme solar storm, with a superfast shock and extremely enhanced ejecta magnetic fields observed near 1 au at STEREO A, was caused by the combination of successive coronal mass ejections (CMEs). Meanwhile, energetic particles were observed by STEREO and near-Earth spacecraft such as the Advanced Composition Explorer and SOlar and Heliospheric Observatory, suggesting a wide longitudinal spread of the particles at 1 au. Combining the SEP observations with in situ plasma and magnetic field measurements, we investigate the longitudinal distribution of the SEP event in connection with the associated shock and CMEs. Our results underscore the complex magnetic configuration of the inner heliosphere formed by solar eruptions. Examination of particle intensities, proton anisotropy distributions, element abundance ratios, magnetic connectivity, and spectra also gives important clues for particle acceleration, transport, and distribution.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5604
Appears in Collections:空间科学部_期刊论文

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