Statistical Mechanics of 1d Self-Gravitating Systems: The Core-Halo Distribution

Details Statistical Mechanics of 1d Self-Gravitating Systems: The Core-Halo Distribution Statistical Mechanics of 1d Self-Gravitating Systems: The Core-Halo Distribution

2011-09-17

arxiv.org/abs/1109.3780v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

5 pages, 3 figures

Scientific paper

10.1111/j.1745-3933.2011.01112.x

We study, using both theory and simulations, a system of self-gravitating sheets. A new statistical mechanics theory - free of any adjustable parameters - is derived to quantitatively predict the final stationary state achieved by this system after the process of collisionless relaxation is completed. The theory shows a very good agreement with the numerical simulations. The model sheds new light on the general mechanism of relaxation of self-gravitating systems and may help us to understand cold matter distribution in the Universe.

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