Scholarlink

<p>Recent observations of Jupiter’s bow shock have provided new insights into the energy dissipation mechanisms associated with bow shocks of outer planets. At greater distances from the Sun, the typically increasing super-Alfvénic nature of the solar wind leads to higher-energy bow shocks with enhanced dissipation requirements. Research on Earth’s bow shock suggests that plasma waves (e.g., ion-acoustic waves, waves driven by the electron cyclotron drift instability, electrostatic solitary waves, and whistler mode waves) play a critical role in converting solar wind bulk kinetic energy into thermal energy. However, the lack of high-resolution plasma wave data, which is essential for detecting these waves, has previously hindered their identification at the outer planets. Here we demonstrate, based on two case studies, that similar waves also exist at Jupiter’s bow shock. But, unlike their terrestrial counterparts, Ion-acoustic waves at Jupiter may display harmonic structures, indicating possible particle trapping, and intense electron cyclotron drift instability may occur to accommodate the shock’s intensity. Magnetic field measurements suggest possible shock reformation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Plasma wave observations from Juno spacecraft at the Jovian bow shock

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月31日

查看全文
  • J. Joseph,
  • W. S. Kurth,
  • L. B. Wilson III,
  • J. E. P. Connerney,
  • F. Allegrini,
  • R. J. Wilson,
  • A. H. Sulaiman,
  • R. W. Ebert,
  • J. B. Faden,
  • C. W. Piker,
  • A. N. Jaynes,
  • B. H. Mauk,
  • S. J. Bolton

摘要

Recent observations of Jupiter’s bow shock have provided new insights into the energy dissipation mechanisms associated with bow shocks of outer planets. At greater distances from the Sun, the typically increasing super-Alfvénic nature of the solar wind leads to higher-energy bow shocks with enhanced dissipation requirements. Research on Earth’s bow shock suggests that plasma waves (e.g., ion-acoustic waves, waves driven by the electron cyclotron drift instability, electrostatic solitary waves, and whistler mode waves) play a critical role in converting solar wind bulk kinetic energy into thermal energy. However, the lack of high-resolution plasma wave data, which is essential for detecting these waves, has previously hindered their identification at the outer planets. Here we demonstrate, based on two case studies, that similar waves also exist at Jupiter’s bow shock. But, unlike their terrestrial counterparts, Ion-acoustic waves at Jupiter may display harmonic structures, indicating possible particle trapping, and intense electron cyclotron drift instability may occur to accommodate the shock’s intensity. Magnetic field measurements suggest possible shock reformation.