Alfvén waves, magnetic decreases, and dicontinuities in interplanetary space

B. T. Tsurutani, B. Buti, J. K. Arballo, T. Hada, E. J. Smith, A. Balogh

    研究成果: Contribution to journalArticle査読

    6 被引用数 (Scopus)

    抄録

    The Ulysses mission goes to the polar regions of the heliosphere and therefore is an ideal mission to study Alfvén waves and discontinuities. The polar region is dominated by a high speed solar wind with embedded outwardly propagating nonlinear (ΔB/B o ~ 1 to 2) Alfvén waves. Rotational discontinuities are detected at the edges of Alfvén waves and have been shown to be the phase-steepened edges of the waves. Dissipation at these phase-steepened Alfvén waves has been sought in the plasma and magnetic field data, but not found. Another phenomenon detected at high latitudes is magnetic field decreases (MDs) bounded by discontinuities. One-dimensional simulation results suggest that MDs may be a product of the evolution of nonlinear Alfvén waves. Published by Elsevier Science Ltd on behalf of COSPAR.

    本文言語英語
    ページ(範囲)765-769
    ページ数5
    ジャーナルAdvances in Space Research
    28
    5
    DOI
    出版ステータス出版済み - 2001

    All Science Journal Classification (ASJC) codes

    • 航空宇宙工学
    • 天文学と天体物理学
    • 地球物理学
    • 大気科学
    • 宇宙惑星科学
    • 地球惑星科学(全般)

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