Structure formation of self-gravitational oscillator system
| Project/Area Number |
15K13536
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Kagoshima University |
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Principal Investigator |
Wada Keiichi 鹿児島大学, 理工学域理学系, 教授 (30261358)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Keywords | spiral structure / N-body system / 無衝突系 / 数値実験 / 振動子 / 自己重力系 |
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| Outline of Final Research Achievements |
We have made a numerical code to investigate evolution in phase and real spaces of one-dimensional oscillators interacting each other with a long-range gravitational-like force. We also developed a N-body code for 2-dimensional rotating disks consisted of many interacting particles in an external potential. Non-steady spiral-like structures are self-developed, and we analyze their group behavior in angular momentum-Jacobi integral spaces (E-J space). We found that the particles in the non-steady spirals non-linearly oscillate in the E-J space along the critical curve. This suggests that the structure formation in the real space does not result in the scattering by dynamical resonances due to the non-steady spiral arms.
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Report
(3 results)
Research Products
(1 results)
