Parameters of core collapse
Parameters of core collapse
复制标题
核心塌陷参数
DOI:
10.1046/j.1365-8711.2003.06407.x
复制
发表时间:
2003
影响因子:
4.8
通讯作者:
J. Makino
中科院分区:
文献类型:
--
作者:
H. Baumgardt;D. Heggie;P. Hut;J. Makino
This paper considers the phenomenon of deep core collapse in collisional stellar systems, with stars of equal mass. The collapse takes place on some multiple, xi(-1), of the central relaxation time, and produces a density profile in which rho proportional to r(-alpha), where alpha is a constant. The parameters alpha and xi have usually been determined from simplified models, such as gas and Fokker-Planck models, often with the simplification of isotropy. Here we determine the parameters directly from N-body simulations carried out using the newly completed GRAPE-6.