DOI: | 10.1002/2015GL066980
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论文题名: | Quantifying gyrotropy in magnetic reconnection |
作者: | Swisdak M.
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刊名: | Geophysical Research Letters
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ISSN: | 0094-9529
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EISSN: | 1944-9260
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出版年: | 2016
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卷: | 43, 期:1 | 起始页码: | 43
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结束页码: | 49
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语种: | 英语
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英文关键词: | gyrotropy
; magnetic reconnection
; PIC simulations
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Scopus关键词: | Earth sciences
; Geophysics
; Arbitrary coordinate system
; Gyrotropy
; Magnetic reconnections
; Magnetic topologies
; PIC simulation
; Pressure tensors
; Separatrices
; X-point
; Magnetism
; coordinate
; electromagnetic radiation
; electron
; gyre
; magnetic field
; numerical model
; quantitative analysis
; spacecraft
; tensile strength
; topology
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英文摘要: | A new scalar measure of the gyrotropy of a pressure tensor is defined. Previously suggested measures are shown to be incomplete by means of examples for which they give unphysical results. To demonstrate its usefulness as an indicator of magnetic topology, the new measure is calculated for electron data taken from numerical simulations of magnetic reconnection, shown to peak at separatrices and X points, and compared to the other measures. The new diagnostic has potential uses in analyzing spacecraft observations, and so a method for calculating it from measurements performed in an arbitrary coordinate system is derived. © 2015. American Geophysical Union. All Rights Reserved. |
URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957727778&doi=10.1002%2f2015GL066980&partnerID=40&md5=0506647350aaa78ebffd480dbd324f6d
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Citation statistics: |
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资源类型: | 期刊论文
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标识符: | http://119.78.100.158/handle/2HF3EXSE/10492
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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: | IREAP, University of Maryland, College Park, MD, United States
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Recommended Citation: |
Swisdak M.. Quantifying gyrotropy in magnetic reconnection[J]. Geophysical Research Letters,2016-01-01,43(1).
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