N-body evolution of dense clusters of compact stars
N-body evolution of dense clusters of compact stars
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致密星团的 N 体演化
DOI：
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发表时间：
1993
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通讯作者：
M. Lee
中科院分区：
文献类型：
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作者：
M. Lee
利用直接N体模拟研究致密星团的动力学演化。双星的形成及其随后的引力辐射合并对这类星系团的演化具有重要意义。Aarseth的NBODY 5 N体模拟程序被修改，以包括在两体相遇过程中的最低阶引力辐射力，并处理辐射双星的衰变和合并。它被用来研究小N（=1000）团簇的演化与不同的初始速度色散。初始演化与Quinlan & Shapiro（1989）用多质量Fokker-Planck代码得到的结果相似，显示了重物体的有序形成
The dynamical evolution of dense clusters of compact stars is studied using direct N-body simulations. The formation of binaries and their subsequent merging by gravitational radiation emission is important to the evolution of such clusters. Aarseth's NBODY5 N-body simulation code is modified to include the lowest order gravitational radiation force during two-body encounters and to handle the decay and merger of radiating binaries. It is used to study the evolution of small-N (=1000) clusters with different initial velocity dispersions. The initial evolution is similar to that obtained by Quinlan & Shapiro (1989) using a multimass Fokker-Planck code and shows orderly formation of heavy objects