2012 Fiscal Year Final Research Report
Fast magneticreconnection theory and application to substorms and flares
| Project/Area Number |
21340142
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | Ehime University |
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Principal Investigator |
UGAI Masayuki 愛媛大学, 宇宙進化研究センター, 教授 (10036444)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMIZU Toru 愛媛大学, 宇宙進化研究センター, 准教授 (60196524)
KONDO Koji 愛媛大学, 宇宙進化研究センター, 助教 (30304653)
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| Project Period (FY) |
2009 – 2012
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| Keywords | 宇宙プラズマ / 磁気リコネクション / 電磁流体 / 磁気圏サブストーム / 太陽フレア / プラズモイド / コロナ加熱 |
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| Research Abstract |
The spontaneous fast reconnection model is extended to general three-dimensional situations, and the physical mechanism of fast reconnection evolution is studied by MHD simulations. The results are applied to flares and substorms, and the 3D structures of flaring loops and plasmoids are clarified. It is demonstrated that the plasmoid propagation in sheared fields is in good agreement with satellite observations; also, the fast reconnection evolution in low-beta plasmas in initially force-free current sheets is responsible for explosive flaring expansion and remarkable coronal heating.
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