Evolution of large amplitude Alfvén waves in the solar wind with β∼1

    研究成果: Contribution to journalArticle査読

    47 被引用数 (Scopus)

    抄録

    A new set of equations is obtained which describes evolution of finite amplitude, dispersive, elliptically polarized quasi‐parallel Alfvén waves, when the plasma and the wave amplitude satisfy the condition, |1‐CS2/CA2| < δB/B0, where CA and Cs are the Alfvén and the sound speed, respectively, and δB/B0 is the Alfvén wave amplitude normalized to the background magnetic field. When this condition is satisfied, the sound wave as well as the right‐ and left‐hand polarized Alfvén waves are nearly all degenerated. The solar wind plasma is a typical medium for the obtained set of equations to apply, since the plasma β is high, and the solar wind Alfvén waves have large amplitude. Modulational instability of a circularly polarized parallel Alfvén wave is discussed.

    本文言語英語
    ページ(範囲)2415-2418
    ページ数4
    ジャーナルGeophysical Research Letters
    20
    22
    DOI
    出版ステータス出版済み - 1 1 1993

    All Science Journal Classification (ASJC) codes

    • 地球物理学
    • 地球惑星科学(全般)

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