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Ion Acceleration an...
Ion Acceleration and Corresponding Bounce Echoes Induced by Electric Field Impulses: MMS Observations
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- Li, Xing Yu (författare)
- Institute of Space Physics and Applied Technology, Peking University, Beijing, China
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- Liu, Zhi Yang (författare)
- Institute of Space Physics and Applied Technology, Peking University, Beijing, China
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- Zong, Qiu Gang (författare)
- Institute of Space Physics and Applied Technology, Peking University, Beijing, China; State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Taipa, China
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- Zhou, Xu Zhi (författare)
- Institute of Space Physics and Applied Technology, Peking University, Beijing, China
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- Liu, Jian Jun (författare)
- MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai, China
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- Hu, Ze Jun (författare)
- MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai, China
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- Zhao, Xing Xin (författare)
- Institute of Space Physics and Applied Technology, Peking University, Beijing, China; MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai, China
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- Hao, Yi Xin (författare)
- Max Planck Institute for Solar System Research, Göttingen, Germany
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- Liu, Ying (författare)
- Institute of Space Physics and Applied Technology, Peking University, Beijing, China
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- Yang, Fan (författare)
- Institute of Space Physics and Applied Technology, Peking University, Beijing, China
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- Pollock, Craig J. (författare)
- Denali Scientific, Fairbanks, AK, USA
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- Russell, Christopher T. (författare)
- Department of Earth and Space Sciences, University of California, Los Angeles, CA, USA
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- Lindqvist, Per-Arne (författare)
- KTH,Rymd- och plasmafysik
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(creator_code:org_t)
- American Geophysical Union (AGU), 2024
- 2024
- Engelska.
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Ingår i: Journal of Geophysical Research - Space Physics. - : American Geophysical Union (AGU). - 2169-9380 .- 2169-9402. ; 129:2
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Dayside magnetosphere interactions are essential for energy and momentum transport between the solar wind and the magnetosphere. In this study, we investigate a new phenomenon within this regime. Sudden enhancements of ion fluxes followed by repeating dropouts and recoveries were observed by Magnetospheric Multiscale on 5 November 2016, which is the very end of the recovery phase from a moderate geomagnetic storm. These repetitive flux variations display energy-dispersive characteristics with periods relevant to ion bounce motion, suggesting they are corresponding echoes. Alongside the flux variations, bipolar electric field impulses originating from external sources were detected. We traced the source region of the initial injection and found it is located near the spacecraft's position. To elucidate the underlying physics, a test-particle simulation is conducted. The results reveal that radial transport resulting from impulse-induced acceleration can give rise to these echoes. Observations demonstrate dayside magnetosphere interactions are more common than we previously considered, which warrants further research.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- bounce echo
- dayside magnetosphere
- electric field impulse
- outer magnetosphere
- particle acceleration
- particle transport
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- ref (ämneskategori)
- art (ämneskategori)
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Li, Xing Yu
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Liu, Zhi Yang
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Zong, Qiu Gang
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Zhou, Xu Zhi
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Liu, Jian Jun
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Hu, Ze Jun
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Zhao, Xing Xin
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Hao, Yi Xin
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Liu, Ying
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Yang, Fan
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Pollock, Craig J ...
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Russell, Christo ...
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Lindqvist, Per-A ...
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