On a New Method of N-Body Simulations

• 作者: Emmanuil Vilkoviskij
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 地球科学
• 关键词: GALAXIES NUCLEI METHODS N-BODY Simulations
• 年，卷（期）: 2012,（3）
• 页码范围: 113-118
• 页数: 6页
• 分类号: P1

摘要

The theoretical foundation of a new N-body simulation method for the dynamics of large numbers (N > 106) of gravitating bodies is described. The new approach is founded on the probability description of the physical parameters and a similarity method which permits a manifold reduction of the calculation time for the evolution of “large” systems. This is done by averaging the results of calculations over an ensemble of many “small” systems with total particle number in the ensemble equal to the number of stars in the large system. The method is valid for the approximate calculation of the evolution of large systems, including dissipative systems like AGN containing a supermassive black hole, accretion disc, and the surrounding stellar cluster.