Brownian Dynamics around the Core of Self-Gravitating Systems
スポンサーリンク
概要
- 論文の詳細を見る
We derive the non-Maxwellian distribution of self-gravitating $N$-body systems around the core using a model on the basis of a random process with additive and multiplicative noises. Number density can be obtained through the steady-state solution of the Fokker–Planck equation corresponding to a random process. We show that number density becomes equal to that of the King model around the core by adjusting friction coefficient and the intensity of multiplicative noise. We also show that our model can be applied in a system with a heavier particle. Moreover, we confirm the validity of our model by comparing it with results of our numerical simulation.
- Physical Society of Japanの論文
- 2010-06-15
著者
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Takayuki Tatekawa
Center for Computational Science and e-Systems, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito, Tokyo 110-0015, Japan
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Tashiro Tohru
Department of Physics, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo 112-8610, Japan
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Tatekawa Takayuki
Center for Computational Science and e-Systems, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito, Tokyo 110-0015, Japan
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Tohru Tashiro
Department of Physics, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo 112-8610, Japan