Astrophysics and Space Science

, Volume 181, Issue 1, pp 43–53 | Cite as

N-body simulation of two-dimensional stationary stellar distributions: Dissipation of energy and development of the field of velocity

  • K. O. Thielheim
  • Liu Bulin


The procedure for the simulation of two-dimensionalN-body configurations described in this paper has been devised to investigate the dissipation of energy and the development of velocity in given sub-regions of stellar systems, especially in the central region of a galaxy. In these simulations massive particles are injected into the given spatial region at a pre-determined constant time rate and at a given distribution of velocity vectors. The mass points are allowed to interact gravitationally and special attention is given to the influence of near-by encounters. After a certain period of time a stationary (equilibrium) situation settles down with a certain distribution of mass points in position and velocity space. Preliminary results obtained so far demonstrate the reliability of this procedure forN-body simulation and for the investigation of the dissipation of energy and of the development of velocity fields. Forthcoming results are hoped to deliver information on the role of three-body encounters in the processes of randomization at work in self-consistent stellar configurations.


Constant Time Central Region Velocity Field Velocity Vector Massive Particle 
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Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • K. O. Thielheim
    • 1
  • Liu Bulin
    • 1
  1. 1.Institute of Pure and Applied Nuclear PhysicsUniversity of KielF.R.G.

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