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ULF Wave-Induced Io...
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Li, Xing-YuPeking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
(författare)
ULF Wave-Induced Ion Pitch Angle Evolution in the Dayside Outer Magnetosphere
- Artikel/kapitelEngelska2022
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American Geophysical Union (AGU),2022
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Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-311514
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-311514URI
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https://doi.org/10.1029/2022GL098108DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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QC 20220503
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Drift-bounce resonance between ultralow frequency (ULF) waves and ions is essential for ion energization in the magnetosphere. Here, we present the first comprehensive study of drift-bounce resonance in the dayside outer magnetosphere, where off-equatorial magnetic field minima would strongly distort ions' bounce and drift motion. A generalized theory is proposed, in which the effects of off-equatorial minima, time-evolving fields and ion bounce motion are taken into account. In consequence of these effects, ion pitch angle distributions undergo dramatic changes. In the presence of off-equatorial minima, the time-of-flight effect of ion bounce motion forms latitude-dependent dispersions besides "paw-track shaped" structures, while evolving wave fields cause time-dependent phase shifts in "paw-tracks." All the predicted signatures have been confirmed by 5 years of Magnetospheric Multiscale spacecraft data and numerical simulations. These results allow us to better understand the interactions between ULF waves and thermal ion species in global magnetospheric dynamics.
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Liu, Zhi-YangPeking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
(författare)
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Zong, Qiu-GangPeking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
(författare)
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Liu, Jian-JunPolar Res Inst China, Shanghai, Peoples R China.
(författare)
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Fu, Sui-YanPeking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
(författare)
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Zhou, Xu-ZhiPeking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
(författare)
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Hao, Yi-XinHelmholtz Ctr Potsdam, GFZ German Res Ctr Geosci, Potsdam, Germany.
(författare)
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Pollock, Craig J.Denali Sci, Fairbanks, AK USA.
(författare)
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Russell, Christopher T.Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA.
(författare)
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Ergun, Robert E.Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA.
(författare)
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Lindqvist, Per-ArneKTH,Rymd- och plasmafysik(Swepub:kth)u1yukyk9
(författare)
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Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.Polar Res Inst China, Shanghai, Peoples R China.
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Geophysical Research Letters: American Geophysical Union (AGU)49:80094-82761944-8007
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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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Liu, Jian-Jun
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Fu, Sui-Yan
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Zhou, Xu-Zhi
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visa fler...
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Hao, Yi-Xin
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Pollock, Craig J ...
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Russell, Christo ...
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Ergun, Robert E.
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Lindqvist, Per-A ...
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visa färre...
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