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16 papers · 2 filters
Mimicking the cosmological constant for more than one observable with large scale inhomogeneities
Antonio Enea Romano
Assuming the definition of the inversion problem (IP) as the exact matching of the terms in the low redshift expansion of cosmological observables calculated for different cosmolog…
AMiBA: scaling relations between the integrated Compton-y and X-ray derived temperature, mass, and luminosity
Chih-Wei Locutus Huang, Jiun-Huei Proty Wu, Paul T. P. Ho +27
We investigate the scaling relations between the X-ray and the thermal Sunyaev-Zel'dovich Effect (SZE) properties of clusters of galaxies, using data taken during 2007 by the Y.T.…
Effects on the two-point correlation function from the coupling of quintessence to dark matter
Seokcheon Lee, Guo-chin Liu, Kin-wang Ng
We investigate the effects of the nonminimal coupling between the scalar field dark energy (quintessence) and the dark matter on the two- point correlation function. It is well kno…
Spherical collapse model with non-clustering dark energy
Seokcheon Lee, Kin-Wang Ng
We investigate a spherical overdensity model for the non-clustering dark energy (DE) with the constant equation of state, w in a flat universe. In this case, the exact solution for…
Spherical collapse model with and without curvature
Seokcheon Lee
We investigate a spherical collapse model with and without the spatial curvature. We obtain the exact solutions of dynamical quantities such as the ratio of the scale factor to its…
Properties of the exact analytic solution of the growth factor and its applications
Seokcheon Lee, Kin-Wang Ng
There have been the approximate analytic solution \cite{Silveria} and several approximate analytic forms \cite{0508156,Carroll,0303112} of the growth factor for the general…