Solar-wind proton access deep into the near-Moon wake

M. N. Nishino, M. Fujimoto, K. Maezawa, Y. Saito, S. Yokota, K. Asamura, T. Tanaka, H. Tsunakawa, M. Matsushima, F. Takahashi, T. Terasawa, H. Shibuya, H. Shimizu

研究成果: Contribution to journalArticle査読

70 被引用数 (Scopus)

抄録

We study solar wind (SW) entry deep into the nearMoon wake using SELENE (KAGUYA) data. It has been known that SW protons flowing around the Moon access the central region of the distant lunar wake, while their intrusion deep into the near-Moon wake has never been expected. We show that SW protons sneak into the deepest lunar wake (anti-subsolar region at ∼ 100 km altitude), and that the entry yields strong asymmetry of the near-Moon wake environment. Particle trajectory calculations demonstrate that these SW protons are once scattered at the lunar dayside surface, picked-up by the SW motional electric field, and finally sneak into the deepest wake. Our results mean that the SW protons scattered at the lunar dayside surface and coming into the night side region are crucial for plasma environment in the wake, suggesting absorption of ambient SW electrons into the wake to maintain quasi-neutrality.

本文言語英語
論文番号L16103
ジャーナルGeophysical Research Letters
36
16
DOI
出版ステータス出版済み - 8 1 2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地球惑星科学(全般)

フィンガープリント

「Solar-wind proton access deep into the near-Moon wake」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル