| Project/Area Number |
15K05040
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
HIROSE Shigenobu 国立研究開発法人海洋研究開発機構, 数理科学・先端技術研究分野, 主任研究員 (90266924)
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| Co-Investigator(Kenkyū-buntansha) |
佐野 孝好 大阪大学, レーザー科学研究所, 助教 (80362606)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 降着円盤 / 輻射輸送 / 磁気回転不安定 / 重力不安定 / 対流不安定 / 原始惑星系円盤 / 乱流 / 矮新星 / 自己重力不安定 |
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| Outline of Final Research Achievements |
Accretion disks are rotating gaseous disks formed around a gravitational object including a black hole, a neutron star, and a protostar. Just as stars in the main sequence have a mass-luminosity relation, accretion disks have also a mass - luminosity relation (per unit area), depending on the angular frequncy, which is called a thermal equilibrium curve. This sort of “mass - luminosity” relation is a fundamental relation for astrophysical objects in a steady state since they describes the basic thermodynamics of them. In this study, we have succeeded in obtainining thermal equilibirum curves systematically, using a single radiation magnetohydrodynamics simulation code, for various types of accretion disks, whose typical gas temperature ranges from 10K to 1e7K.
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