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

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

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.181...43t&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 181, no. 1, July 1991, p. 43-53.

Astronomy and Astrophysics

Astrophysics

1

Energy Dissipation, Galactic Nuclei, Many Body Problem, Stellar Systems, Two Dimensional Models, Computerized Simulation, Gravitational Effects, Star Distribution, Velocity Distribution

Scientific paper

The procedure for the simulation of two-dimensional N-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 for N-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.

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