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The Induced Global Looping Magnetic Field on Mars

文献类型:期刊论文

作者Chai,Lihui1,2; Wan,Weixing1; Wei,Yong1; Zhang,Tielong3; Exner,Willi4; Fraenz,Markus5; Dubinin,Eduard5; Feyerabend,Moritz4; Motschmann,Uwe4,6; Ma,Yingjuan7
刊名The Astrophysical Journal Letters
出版日期2019-01-28
卷号871期号:2
ISSN号2041-8205
关键词magnetic fields planets and satellites: magnetic fields plasmas solar–terrestrial relations solar wind
DOI10.3847/2041-8213/aaff6e
英文摘要Abstract Magnetic fields inconsistent with draped interplanetary magnetic fields and crustal fields have been observed on Mars. Considering the discovery of a global looping magnetic field around the Venusian magnetotail and the similarities in the solar wind interactions between Mars and Venus, we use Mars Atmosphere and Volatile Evolution observations to investigate the global looping field on Mars and its formation mechanism. It is found that a global looping field also exists on Mars; therefore, this type of global looping field is a common feature of unmagnetized planetary bodies with ionospheres, and therefore should also exist on Titan and near-Sun comets. The comparison of the looping fields on Mars and Venus shows that the looping field is stronger on Mars. Solar wind azimuthal flows around the magnetotail toward the ? magnetotail polar region ( ) are observed. We illustrate that the looping field can be formed by bending the draped field lines with these azimuthal flows, and that these azimuthal flows are associated with heavy ion plumes along the + direction that are expected to be stronger on Mars than Venus. The current system associated with the looping field and its possible connection with the nightside ionosphere formations and ion escapes on Mars and Venus are discussed.
语种英语
出版者The American Astronomical Society
WOS记录号IOP:2041-8205-871-2-AAFF6E
源URL[http://ir.iggcas.ac.cn/handle/132A11/90178]  
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
作者单位1.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, People’s Republic of China; chailihui@mail.iggcas.ac.cn
2.College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
3.Space Research Institute, Austrian Academy of Sciences, Graz, Austria
4.Institute for Theoretical Physics, TU Braunschweig, Braunschweig, Germany
5.Max Planck Institute for Solar System Research, Goettingen, Germany
6.DLR Institute of Planetary Research, Berlin, Germany
7.Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA, USA
8.Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA
9.University of Science and Technology of China, Hefei, People’s Republic of China
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GB/T 7714
Chai,Lihui,Wan,Weixing,Wei,Yong,et al. The Induced Global Looping Magnetic Field on Mars[J]. The Astrophysical Journal Letters,2019,871(2).
APA Chai,Lihui.,Wan,Weixing.,Wei,Yong.,Zhang,Tielong.,Exner,Willi.,...&Zhong,Jun.(2019).The Induced Global Looping Magnetic Field on Mars.The Astrophysical Journal Letters,871(2).
MLA Chai,Lihui,et al."The Induced Global Looping Magnetic Field on Mars".The Astrophysical Journal Letters 871.2(2019).

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来源:地质与地球物理研究所

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