Simulation of asymmetric solar wind electron distributions
SCIE
SCOPUS
- Title
- Simulation of asymmetric solar wind electron distributions
- Authors
- Ryu, CM; Hee Chul Ahn; Tongnyeol Rhee; Peter H. Yoon; Ziebell, LF; Gaelzer, R; Vinas, AF
- Date Issued
- 2009-06
- Publisher
- AMER INST PHYSICS
- Abstract
- The electron distributions detected in the solar wind feature varying degrees of anisotropic high-energy tail. In a recent work the present authors numerically solved the one-dimensional electrostatic weak turbulence equations by assuming that the solar wind electrons are initially composed of thermal core plus field-aligned counterstreaming beams, and demonstrated that a wide variety of asymmetric energetic tail distribution may result. In the present paper, the essential findings in this work are tested by means of full particle-in-cell simulation technique. It is found that the previous results are largely confirmed, thus providing evidence that the paradigm of local electron acceleration to high-energy tail by self-consistently excited Langmuir turbulence may be relevant to the solar wind environment under certain circumstances. However, some discrepancies are found such that the nearly one-sided energetic tail reported in the numerical solution of the weak turbulence kinetic equation is not shown.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12604
- DOI
- 10.1063/1.3085795
- ISSN
- 1070-664X
- Article Type
- Article
- Citation
- PHYSICS OF PLASMAS, vol. 16, no. 6, 2009-06
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