2011 Fiscal Year Final Research Report
Particle acceleration and transport in solar flares
| Project/Area Number |
21740135
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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 |
Astronomy
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| Research Institution | Japan Agency for Marine-Earth Science and Technology (2010-2011)
Nagoya University (2009) |
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Principal Investigator |
MINOSHIMA Takashi 独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 研究員 (00514811)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 太陽物理学 / 太陽フレア / 粒子加速 |
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| Research Abstract |
To understand the mechanism of particle acceleration and transport in solar flares, we develop a numerical model based on the drift-kinetic theory. Under a potential magnetic field configuration, we find that electrons are accelerated at the top of closed loops and along open field lines. With including the pitch-angle scattering, the peak height of loop-top electrons depends on their energy. This result can explain the origin of the "above-the-loop-top" hard X-ray sources. Under a more complicated field configuration, on the other hand, we find an impulsive electron flux along the closed field lines.
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