DOI: 10.1029/2018JA025331
Scopus记录号: 2-s2.0-85050408645
论文题名: Three-Dimensional Magnetohydrodynamic Simulations of the Solar Wind Interaction With a Hyperfast-Rotating Uranus
作者: Griton L. ; Pantellini F. ; Meliani Z.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 7 起始页码: 5394
结束页码: 5406
语种: 英语
英文关键词: magnetohydrodynamics
; magnetosphere
; solar wind
; Uranus
英文摘要: We present magnetohydrodynamic simulations of a fast-rotating planetary magnetosphere reminiscent of the planet Uranus at solstice, that is, with the spin axis pointing to the Sun. We impose a 10 times faster rotation than for Uranus, in order to emphasize the effects of rotation on the magnetospheric tail without the need of an excessively large simulation domain while keeping the qualitative aspects of a supersonic magnetized solar wind interacting with a fast-rotating magnetosphere. We find that a complex helical Alfvénic structure propagates downstream at a velocity exceeding the plasma velocity in the magnetosheath. Similarly, the reconnection regions, which mediate the interaction of the planetary magnetic field and the interplanetary magnetic field, do also form a helical structure with the same downstream velocity but a 2 times larger pitch. We speculate that the magnetic field of the helical structure connected to the interplanetary magnetic field asymptotically reduces the phase velocity of the helical structure toward the tailward velocity in the magnetosheath. For our simulations we use the MPI-AMRVAC code which we enhanced with a time-dependent background magnetic field in the splitting of the magnetic field. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113548
Appears in Collections: 气候减缓与适应
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作者单位: LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, Meudon, France; LUTH, Observatoire de Paris, PSL Research University, CNRS UMR 8102, Université Paris Diderot, Meudon, France
Recommended Citation:
Griton L.,Pantellini F.,Meliani Z.. Three-Dimensional Magnetohydrodynamic Simulations of the Solar Wind Interaction With a Hyperfast-Rotating Uranus[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(7)