2009 Fiscal Year Final Research Report
Microinstabilities as dissipation mechanisms of high Mach number collisionless shocks
| Project/Area Number |
19740304
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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 | Kyushu University |
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Principal Investigator |
MATSUKIYO Shuichi Kyushu University, 大学院・総合理工学研究院, 助教 (00380709)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 宇宙プラズマ / 無衝突衝撃波 / 微視的不安定性 / 異常散逸 |
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| Research Abstract |
It is revealed that dissipation processes in a transition region of a collisionless shock are deeply related with microinstabilities generated there. The resultant micro-scale waves give strong influence on local ion dynamics leading to remarkable modification of spatio-temporal scales of a shock reformation process. Furthermore, it is shown that Mach number dependence of electron heating rate drastically changes at the Mach number of a few tens.
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