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Ion-Vortex Magnetic...
Ion-Vortex Magnetic Hole With Reversed Field Direction in Earth's Magnetosheath
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- Yao, S.T. (author)
- Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China
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- Li, J.H. (author)
- School of Earth and Space Sciences, Peking University, Beijing, China
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- Zhou, X.-Z. (author)
- School of Earth and Space Sciences, Peking University, Beijing, China
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- Shi, Q.Q. (author)
- Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China
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- Zong, Q.-G. (author)
- School of Earth and Space Sciences, Peking University, Beijing, China
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- Zhang, H. (author)
- Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China
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- Li, W.Y. (author)
- State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China
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- Hamrin, Maria, 1972- (author)
- Umeå universitet,Institutionen för fysik
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- Volwerk, M. (author)
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
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- Pitkänen, Timo, 1979- (author)
- Umeå universitet,Institutionen för fysik,Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China
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- Yang, F. (author)
- School of Earth and Space Sciences, Peking University, Beijing, China
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(creator_code:org_t)
- John Wiley & Sons, 2023
- 2023
- English.
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In: Journal of Geophysical Research - Space Physics. - : John Wiley & Sons. - 2169-9380 .- 2169-9402. ; 128:7
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Plasma vortices are ubiquitous in space and play important roles in the transmission of energy and mass at various scales. For small-scale plasma vortices on the order of ion gyroradius, however, their properties and characteristics remain unclear. Here, we provide unique findings of an ion-scale vortex observed in the Earth's magnetosheath. The vortex is generated by the ion diamagnetic drift associated with an isolated magnetic hole (MH). The magnetic field in the axial direction is reversed in the vortex center, which is consistent with ring-shaped currents carried by the ions. The field strength becomes very weak (<1 nT) at the field reversal region, although the ion distributions vary rather continuously across the entire structure. A kinetic equilibrium model is then applied to reconstruct the above features. These findings can help us understand the plasma vortex and MH from magnetohydrodynamics to kinetic scales.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- electron vortex
- ion vortex
- kinetic scale
- magnetic hole
- magnetosheath
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Yao, S.T.
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Li, J.H.
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Zhou, X.-Z.
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Shi, Q.Q.
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Zong, Q.-G.
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Zhang, H.
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Li, W.Y.
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Hamrin, Maria, 1 ...
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Volwerk, M.
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Pitkänen, Timo, ...
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Yang, F.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
- Articles in the publication
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Journal of Geoph ...
- By the university
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Umeå University