| Project/Area Number |
26800258
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | Japan Aerospace EXploration Agency |
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Principal Investigator |
Yokota Shoichiro 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (40435798)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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| Keywords | 月 / 外気圏 / 質量分析 / ピックアップイオン |
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| Outline of Final Research Achievements |
We have derived distributions of the lunar exosphere by using the observation data of the mass analyzer on Kaguya. We proposed a numerical model to explain a dawn-dusk asymmetry of the lunar exosphere which was discovered by Kaguya. Our model implies that the exospheric particles need to be supplied during the night for the observed dawn-dusk asymmetry. We argue that the interplanetary dust as well as grain diffusion and migration/recycling of the exospheric particles may be major suppliers. We also estimated the oxygen flux transported from the Earth to the Moon.
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