The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 41 Issue 1
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- Pages.44.2-44.2
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- 2016
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- 1226-2692(pISSN)
Steady-State Solution for Solar Wind Electrons by Spontaneous Emissions
- Kim, Sunjung (School of Space Research, Kyung Hee University) ;
- Yoon, Peter H. (School of Space Research, Kyung Hee University) ;
- Choe, G.S. (School of Space Research, Kyung Hee University)
- Published : 2016.04.12
Abstract
The solar wind electrons are made of three or four distinct components, which are core Maxwellian background, isotropic halo, and super-halo (and sometimes, highly field-aligned strahl component which can be considered as a fourth element). We put forth a steady-state model for the solar wind electrons by considering both the steady-state particle and wave kinetic equations. Since the steady-state solar wind electron VDFs and the steady-state wave fluctuation spectrum are related to each other, we also investigate the complete fluctuation spectra in the whistler and Langmuir frequency ranges by considering halo- and superhalo-like model electron VDFs. It is found that the energetic electrons make important contributions to the total emission spectrum. Based on this, we complete the steady-state model by considering both the whistler and Langmuir fluctuations. In particular, the Langmuir fluctuation plays an important role in the formation and maintenance of nonthermal electrons.
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