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Magnetic Field near Venus: Comparison between Solar Cycle 24 and Previous Cycles
Chang, Qing1; Xu, Xiaojun1,2; Zhang, Tielong3; Chai, Lihui4; Wei, Yong4; Xu, Qi1
2018-11-10
发表期刊ASTROPHYSICAL JOURNAL
ISSN0004-637X
卷号867期号:2页码:9
摘要Solar Cycle 24 has been proven to be the weakest cycle in solar activity in the last century. So far, most of the evidence has been presented near Earth at 1 au. In this study, we statistically studied the magnetic field of the solar wind near Venus and the induced magnetosphere of Venus using Pioneer Venus Orbiter (PVO) and Venus Express (VEX) observations. Our study provides fundamental and comparative results between different solar phases of Solar Cycle 24 at 0.72 au. The solar wind magnetic field strength near Venus shows a strongly correlated variation with solar activities. While the solar wind magnetic field direction, indicated by the Bx component ratio, is almost the same in different solar phases of the same cycle. It is significantly different between Cycle 24 and previous cycles. The magnetic field strength of the Venusian-induced magnetosphere is also closely correlated to solar activities. It is strongest at solar maximum and weakest at solar minimum. Observations from PVO and VEX clearly show that the magnetic barrier of the Venusian-induced magnetosphere is much weaker in Cycle 24 than in previous cycles. But the average magnetic fields of the ionosphere and the magnetotail are stronger in Cycle 24.
关键词planets and satellites: individual (Venus) planets and satellites: magnetic fields planets and satellites: terrestrial planets Sun: activity solar wind
DOI10.3847/1538-4357/aae3e7
资助者Science and Technology Development Fund of Macao SAR ; Science and Technology Development Fund of Macao SAR ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Science and Technology Development Fund of Macao SAR ; Science and Technology Development Fund of Macao SAR ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Science and Technology Development Fund of Macao SAR ; Science and Technology Development Fund of Macao SAR ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Science and Technology Development Fund of Macao SAR ; Science and Technology Development Fund of Macao SAR ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
关键词[WOS]BOW SHOCK ; GEOMAGNETIC STORMS ; WIND ; MINIMUM ; IONOSPHERE ; LOCATION ; EXPRESS ; ORBITER ; ESCAPE ; ATMOSPHERE
语种英语
资助项目Science and Technology Development Fund of Macao SAR[008/2016/A1] ; Science and Technology Development Fund of Macao SAR[119/2017/A3] ; National Natural Science Foundation of China (NSFC)[41564007] ; National Natural Science Foundation of China (NSFC)[41731067]
资助者Science and Technology Development Fund of Macao SAR ; Science and Technology Development Fund of Macao SAR ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Science and Technology Development Fund of Macao SAR ; Science and Technology Development Fund of Macao SAR ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Science and Technology Development Fund of Macao SAR ; Science and Technology Development Fund of Macao SAR ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Science and Technology Development Fund of Macao SAR ; Science and Technology Development Fund of Macao SAR ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000449532800006
出版者IOP PUBLISHING LTD
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89425
专题地球与行星物理院重点实验室
通讯作者Xu, Xiaojun
作者单位1.Macau Univ Sci & Technol, Space Sci Inst, Macau, Peoples R China
2.Inst Space Sci & Technol, Nanchang 330031, Jiangxi, Peoples R China
3.Harbin Inst Technol, Shenzhen, Peoples R China
4.Inst Geol & Geophys, Beijing, Peoples R China
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Chang, Qing,Xu, Xiaojun,Zhang, Tielong,et al. Magnetic Field near Venus: Comparison between Solar Cycle 24 and Previous Cycles[J]. ASTROPHYSICAL JOURNAL,2018,867(2):9.
APA Chang, Qing,Xu, Xiaojun,Zhang, Tielong,Chai, Lihui,Wei, Yong,&Xu, Qi.(2018).Magnetic Field near Venus: Comparison between Solar Cycle 24 and Previous Cycles.ASTROPHYSICAL JOURNAL,867(2),9.
MLA Chang, Qing,et al."Magnetic Field near Venus: Comparison between Solar Cycle 24 and Previous Cycles".ASTROPHYSICAL JOURNAL 867.2(2018):9.
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