Observations of the Venus Dramatic Response to an Extremely Strong Interplanetary Coronal Mass Ejection

doi:10.3847/1538-4357/ab14e1

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Observations of the Venus Dramatic Response to an Extremely Strong Interplanetary Coronal Mass Ejection
	Xu, Qi 1; Xu, Xiaojun 1; Chang, Qing 1; Rong, Zhaojin 2,3; Wang, Jing 1; Xu, Jiaying 1; Zhang, Tielong 4,5
刊名	ASTROPHYSICAL JOURNAL
	2019-05-01
卷号	876 期号:1 页码:6
关键词	planets and satellites: atmospheres planets and satellites: individual (Venus) planets and satellites: magnetic fields solar wind
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab14e1
英文摘要	On 2011 November 5, Venus Express observed the impact of an extremely strong interplanetary coronal mass ejection (ICME) on Venus. As a result, the Venusian induced magnetosphere dramatically fluctuated during the ICME passage: the bow shock was compressed and broadened by the sheath and the body of the ICME, respectively; an atypically strong magnetic barrier (over 250 nT) of Venus was detected; and the plasma sheet in the magnetotail flapped so rapidly that it was crossed by Venus Express 5 times within 1.5 minutes. The ionosphere was totally magnetized because of the very high magnetic pressure of the induced magnetosphere. However, the altitude of the ionopause did not decrease with respect to those in neighboring orbits, which is inconsistent with the ionopause descents reported by previous studies. We found that the ionosphere was greatly excited by the ICME as evidenced by the much higher heavy ion density. That is why the balance between the ionospheric thermal pressure and the strong magnetic pressure can be maintained at a relatively high altitude. We propose that a much stronger massloading effect resulting from the excited ionosphere is responsible for the anomalously high magnetic barrier because much more magnetic field lines were anchored. Our results also suggest that such ICMEs that can excite the ionosphere are substantially efficient in enhancing the atmospheric loss of Venus.
资助项目	Science and Technology Development Fund of Macao SAR[008/2016/A1] ; National Natural Science Foundation of China (NSFC)[41564007] ; National Natural Science Foundation of China (NSFC)[41731067]
WOS关键词	SOLAR-WIND INTERACTION ; MAGNETIC-FIELD ; PLASMA ENVIRONMENT ; BOW SHOCK ; EXPRESS ; IONOSPHERE ; BARRIER ; MORPHOLOGY ; LOCATION ; ASPERA-4
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000467272900008
资助机构	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)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/91502]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Xu, Xiaojun
作者单位	1.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 4.Harbin Inst Technol, Shenzhen, Peoples R China 5.Austrian Acad Sci, Space Res Inst, Graz, Austria
推荐引用方式 GB/T 7714	Xu, Qi,Xu, Xiaojun,Chang, Qing,et al. Observations of the Venus Dramatic Response to an Extremely Strong Interplanetary Coronal Mass Ejection[J]. ASTROPHYSICAL JOURNAL,2019,876(1):6.
APA	Xu, Qi.,Xu, Xiaojun.,Chang, Qing.,Rong, Zhaojin.,Wang, Jing.,...&Zhang, Tielong.(2019).Observations of the Venus Dramatic Response to an Extremely Strong Interplanetary Coronal Mass Ejection.ASTROPHYSICAL JOURNAL,876(1),6.
MLA	Xu, Qi,et al."Observations of the Venus Dramatic Response to an Extremely Strong Interplanetary Coronal Mass Ejection".ASTROPHYSICAL JOURNAL 876.1(2019):6.