Generalized virial theorem for a system of fluctuating composition
Abstract
A generalization is developed of a virial theorem for subsystems of constantly varying particles, which could occur in a limited region from which particles are exiting and into which particles are moving. Account is taken of the possibility that the boundary of the system will vary over time. For a nonsteady composition of selfconsistent gravitating particles, the theorem is a generalized form of the PoincareEddington equation, which is pertinent to the nbody problem. A sample application of the model is provided in terms of describing the dynamical effects on a gravitating system of varying composition. Use of the theorem to investigate the expulsion of plasmoids from the center of galaxies is indicated.
 Publication:

Astrofizika
 Pub Date:
 July 1985
 Bibcode:
 1985Afz....23...77O
 Keywords:

 Astronomical Models;
 Galactic Evolution;
 Many Body Problem;
 Stellar Motions;
 Virial Theorem;
 Composition (Property);
 Gravitational Fields;
 Particle Interactions;
 Poincare Problem;
 Self Consistent Fields;
 Astrophysics