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

Abstract

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.

arXiv commentReferences added To be published in CQG

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Cited by in corpus (6)

• Making sense of the bizarre behaviour of horizons in the McVittie spacetime
• Black Holes in the Universe: Generalized Lemaitre-Tolman-Bondi Solutions
• Comparing two approaches to Hawking radiation of Schwarzschild-de Sitter black holes
• Perfect fluid spheres with cosmological constant
• Quasi-local masses and cosmological coupling of black holes and mimickers
• Dark Energy on Astrophysical Scales and Its Detection in the Milky Way