2012 Fiscal Year Final Research Report
Non-equilibrium plasmas associated with magnetohydrodynamic waves in solar wind plasmas
| Project/Area Number |
22740324
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | University of Toyama (2012)
Kochi National College of Technology (2010-2011) |
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Principal Investigator |
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| Research Collaborator |
UMEDA Takayuki 名古屋大学, 太陽地球環境研究所, 助教 (40432215)
SAITO Shinji 名古屋大学, 理学研究科, 理学研究科 (60528165)
SUZUKI Takeru 名古屋大学, 理学研究科, 准教授 (80431782)
HADA Tohru 九州大学, 総合理工学研究院, 教授 (30218490)
NARITA Yasuhito Austrian Academy of Sciences (Austria), Space Research Institute, Senior Scientist
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| Project Period (FY) |
2010 – 2012
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| Keywords | 太陽風・惑星間空間 / 宇宙プラズマ / プラズマ波動 |
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| Research Abstract |
In the present study, the solar wind non-equilibrium plasmas associated with magnetohydrodynamic （MHD) waves are discussed. The main results are as follows: （1) The “apparent” temperature anisotropy associated with MHD waves corresponds to the magnetohydrodynamic equilibrium state （Alfven-Beltrami field), （2)Ion beams can be formed by the nonlinear steepening of the MHD waves propagating from the solar corona, （3)The low-frequency MHD waves are rapidly dissipated due to the presence of the beam-induced short-wavelength waves.
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