Thermodynamic modeling of the solar wind plasma in the presence of envelope-modulated low-frequency Alfvén waves

Y. Nariyuki*

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

抄録

Alfvénic fluctuation is a typical state of the solar wind turbulence. Due to its finite amplitude and envelope modulation, the Alfvénic fluctuation becomes compressible. In the present study, an analytical model of the specific heat ratio in the presence of envelope-modulated Alfvén waves is derived. Ion kinetic effects are modeled by using a semi-ideal (perfect) gas model, in which the specific heat ratio depends on temperature. It is shown that the fourth order polynomial approximation is in good agreement with the kinetic theory. The resultant model is also applied to the fast solar wind plasma.

本文言語英語
論文番号062902
ジャーナルPhysics of Plasmas
25
6
DOI
出版ステータス出版済み - 2018/06/01

ASJC Scopus 主題領域

  • 凝縮系物理学

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