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N-Body Simulations of Open, Self-Gravitating Systems | | Daniel Huber
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16 Dec 2000 | | Subject: | astro-ph | | Abstract: | Astrophysical systems differ often in two points from classical thermodynamical systems: 1.) They are open and 2.) gravity is a dominant factor. Both modifies the homogeneous equilibrium structure, known from classical thermodynamics. In order to study the consequence for structure formation in astrophysical systems, we carry out N-body simulations of self-gravitating systems, subjected to an energy-flow. The simulations show that physically realistic, time-dependent boundary conditions can maintain a molecular cloud in a statistically steady state, out of thermodynamic equilibrium. Moreover we perform some simple "gravo-thermal" N-body experiments and compare them with theoretical results. We find negative specific heat in an energy range predicted by Follana and Laliena (1999). | | Source: | arXiv, astro-ph/0101265 | | Services: | Forum | Review | PDF | Favorites | |
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