globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068045
论文题名:
Local modulation and trapping of energetic particles by coherent magnetic structures
作者: Tessein J.A.; Ruffolo D.; Matthaeus W.H.; Wan M.
刊名: Geophysical Research Letters
ISSN: 0094-9074
EISSN: 1944-8805
出版年: 2016
卷: 43, 期:8
起始页码: 3620
结束页码: 3627
语种: 英语
英文关键词: energetic particles ; intermittency ; magnetic fields ; solar wind ; turbulence
Scopus关键词: Charged particles ; Magnetic fields ; Magnetic flux ; Magnetic structure ; Magnetism ; Solar system ; Solar wind ; Turbulence ; Energetic particles ; Flux tubes ; Intermittency ; Observational study ; Particle acceleration ; Secondary islands ; Vector magnetic fields ; Magnetic bubbles ; data acquisition ; flux measurement ; fundamental particle ; magnetic anisotropy ; magnetic field ; magnetic survey ; solar wind ; statistical analysis ; structural response ; turbulence ; vector
英文摘要: Recent observational studies show strong statistical associations between features of interplanetary suprathermal energetic particle (EP) data and rapid changes in the interplanetary vector magnetic field. The latter are connected to intermittency and coherent magnetic structures, including classical discontinuities. Here we discuss these observations in the context of two appealing theoretical ideas: First, magnetic structures bounding flux tubes can cause local or temporary topological trapping, thus influencing EP transport. Second, charged particles may be accelerated by interacting with dynamic flux tubes, either through reconnection, trapping in secondary islands, or a betatron mechanism. We present observations that support interpretation in terms of trapping boundaries associated with changes in EP flux and also find a case in which an EP peak lies near a coherent magnetic structure that is not a shock, with changing particle anisotropy consistent with outflow from the structure, suggestive of local particle acceleration. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981762366&doi=10.1002%2f2016GL068045&partnerID=40&md5=2fb4da98a927ba026a1137f85be0439a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10037
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Physics and Astronomy, University of Delaware, Delaware, NE, United States

Recommended Citation:
Tessein J.A.,Ruffolo D.,Matthaeus W.H.,et al. Local modulation and trapping of energetic particles by coherent magnetic structures[J]. Geophysical Research Letters,2016-01-01,43(8).
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