| Project/Area Number |
25887023
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Research Collaborator |
TAKEUCHI Taku 東京工業大学, 大学院理工学研究科, 特任准教授 (40372651)
MORI Shoji 東京工業大学, 大学院理工学研究科
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| Project Period (FY) |
2013-08-30 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 惑星形成 / 微惑星 / 原始惑星系円盤 / 磁場 / ダスト / 惑星起源・進化 / 理論天文学 |
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| Outline of Final Research Achievements |
Planet formation begins with the growth of dust grains to planetesimals. In this research project, we have focused on the roles of protoplanetary disk turbulence in planetesimal formation processes and have investigated how the intensive of magnetic disk turbulence evolves with dust growth. Specifically, (1) we analyzed the transport of magnetic fluxes (the seeds of magnetic turbulence) within a protoplanetary disk, and found that there is an upper limit on the magnetic flux strength in a steady disk; (2) we for the first time modeled plasma heating by magnetic disk turbulence, and found that the heated plasma stabilizes the magnetic turbulence, promotes grains’ negative charging, and thereby slows down the collisional growth of the grains.
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