Spherically symmeteric dark energy structure in the context of Chaplygin gas model

Details Spherically symmeteric dark energy structure in the context of Chaplygin gas model Spherically symmeteric dark energy structure in the context of Chaplygin gas model

2007-06-06

arxiv.org/abs/0706.0804v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Scientific paper

Spherically symmetric dark energy structures are investigated in the framework of a generalized Chaplygin gas (GCG), which has an equation of state of the form $P = - A/\rho^{\alpha}} $. We also study these in a modified GCG equation of state, which includes a matter term, i.e. $P = \sigma^{2} \rho - A/\rho^{\alpha}$. The results of the latter are then compared with some observational data on low-surface-brightness galaxies which are supposed to be dominated by dark matter.

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