Structure of the lunar wake: Two‐dimensional global hybrid simulations

DOI Web Site Web Site 被引用文献6件
  • Pavel Trávníček
    Department of Space Physics, Institute of Atmospheric Physics Academy of Sciences of the Czech Republic Prague Czech Republic
  • Petr Hellinger
    Department of Space Physics, Institute of Atmospheric Physics Academy of Sciences of the Czech Republic Prague Czech Republic
  • David Schriver
    Institute of Geophysics and Planetary Physics University of California Los Angeles California USA
  • Stuart D. Bale
    Space Sciences Laboratory and Department of Physics University of California Berkeley California USA

書誌事項

公開日
2005-03
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2004gl022243
公開者
American Geophysical Union (AGU)

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説明

<jats:p>We study the structure and properties of the lunar wake with these solar wind parameters: the angle θ<jats:sub>sw</jats:sub> between directions of the solar wind velocity <jats:bold><jats:italic>v</jats:italic></jats:bold><jats:sub>sw</jats:sub> and the ambient interplanetary magnetic field (IMF) <jats:bold><jats:italic>B</jats:italic></jats:bold> θ<jats:sub>sw</jats:sub> = 45° and 90° and <jats:italic>v</jats:italic><jats:sub>sw</jats:sub> = 6<jats:italic>v</jats:italic><jats:sub><jats:italic>A</jats:italic></jats:sub> (where <jats:italic>v</jats:italic><jats:sub><jats:italic>A</jats:italic></jats:sub> denotes solar wind Alfvén velocity). We examine the structure of the wake‐tail formed behind the obstacle. In agreement with in situ observations the lunar wake is formed by two counterstreaming beams which fill the wake with a relatively cold, inhomogeneous and highly anisotropic plasma. The results of this study suggest that for given solar wind conditions the downstream region of the lunar wake is dominated by electromagnetic turbulence with the frequencies near the local proton gyrofrequency. The properties and possible generating mechanisms of the low‐frequency electromagnetic turbulence are discussed.</jats:p>

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