From Global to Local Dynamics: Effects of the Expansion on Astrophysical Structures

Details From Global to Local Dynamics: Effects of the Expansion on Astrophysical Structures From Global to Local Dynamics: Effects of the Expansion on Astrophysical Structures

2007-04-14

arxiv.org/abs/0704.1871v2

Class.Quant.Grav.24:2677-2688,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

References added To be published in CQG

Scientific paper

10.1088/0264-9381/24/10/013

We explore the effects of background cosmology on large scale structures with non-spherical symmetry by using the concept of quasi-equilibrium which allows certain internal properties (e.g. angular velocity) of the bodies to change with time. In accordance with the discovery of the accelerated phase of the universe we model the cosmological background by two representative models: the $\Lambda$CDM Model and the Chaplygin Gas Model. We compare the effects of the two models on various properties of large astrophysical objects. Different equations of state are also invoked in the investigation.

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