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DOI | 10.1002/2017GL072536 |
Evolution of electron phase space holes in inhomogeneous magnetic fields | |
Kuzichev, I. V.1; Vasko, I. Y.2; Agapitov, O. V.2,3; Mozer, F. S.2; Artemyev, A. V.1,4 | |
2017-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Russia; USA; Ukraine |
英文摘要 | Electron phase space holes (EHs) are electrostatic solitary waves that are widely observed in the space plasma often permeated by inhomogeneous magnetic fields. Understanding of the EH evolution in inhomogeneous magnetic fields is critical for accurate interpretations of spacecraft data. To study this evolution, we use 1.5-D gyrokinetic electrostatic Vlasov code (magnetized electrons and immobile ions) with periodic boundary conditions. We find that EHs propagating into stronger (weaker) magnetic field are decelerated (accelerated) with deceleration (acceleration) rate dependent on the magnetic field gradient. Remarkably, decelerating EHs are reflected at the magnetic field dependent only on EH parameters (independent of the magnetic field gradient). A magnetic field inhomogeneity results in development of a net potential drop along EHs. Our simulations suggest that slow EHs recently observed in the plasma sheet boundary layer can appear due to braking of initially fast EHs by magnetic field gradients and that a large number of even fast EHs can contribute to macroscopic parallel potential drops. |
英文关键词 | solitary waves electron holes Vlasov simulation slow electron holes |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398183700007 |
WOS关键词 | SOLITARY STRUCTURES ; VLASOV EQUATION ; WAVES ; MAGNETOTAIL ; SIMULATION ; SYSTEM ; SHOCK |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29175 |
专题 | 气候变化 |
作者单位 | 1.RAS, Space Res Inst, Moscow, Russia; 2.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA USA; 3.Taras Shevchenko Natl Univ Kyiv, Astron & Space Phys Dept, Kiev, Ukraine; 4.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Dept Earth Planetary & Space Sci, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Kuzichev, I. V.,Vasko, I. Y.,Agapitov, O. V.,et al. Evolution of electron phase space holes in inhomogeneous magnetic fields[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(5). |
APA | Kuzichev, I. V.,Vasko, I. Y.,Agapitov, O. V.,Mozer, F. S.,&Artemyev, A. V..(2017).Evolution of electron phase space holes in inhomogeneous magnetic fields.GEOPHYSICAL RESEARCH LETTERS,44(5). |
MLA | Kuzichev, I. V.,et al."Evolution of electron phase space holes in inhomogeneous magnetic fields".GEOPHYSICAL RESEARCH LETTERS 44.5(2017). |
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