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Dissipationless collapse of a set of N massive particles

Abstract : The formation of self-gravitating systems is studied by simulating the collapse of a set of N particles which are generated from several distribution functions. We first establish that the results of such simulations depend on N for small values of N. We complete a previous work by Aguilar & Merritt concerning the morphological segregation between spherical and elliptical equilibria. We find and interpret two new segregations: one concerns the equilibrium core size and the other the equilibrium temperature. All these features are used to explain some of the global properties of self-gravitating objects: origin of globular clusters and central black hole or shape of elliptical galaxies.
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https://hal-ensta-paris.archives-ouvertes.fr/hal-00988993
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Submitted on : Sunday, March 20, 2022 - 6:24:07 PM
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Jérôme Perez, Fabrice Roy. Dissipationless collapse of a set of N massive particles. Monthly Notices of the Royal Astronomical Society, 2004, 348 (1), pp.62-72. ⟨10.1111/j.1365-2966.2004.07294.x⟩. ⟨hal-00988993⟩

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