282 citations · 908 across the 14 of their papers we have counts for
14 papers
How close can an Inhomogeneous Universe mimic the Concordance Model?
Peter Dunsby, Naureen Goheer, Bob Osano +1
Recently, spatially inhomogeneous cosmological models have been proposed as an alternative to the LCDM model, with the aim of reproducing the late time dynamics of the Universe wit…
Power-law cosmic expansion in f(R) gravity models
Naureen Goheer, Julien Larena, Peter K. S. Dunsby
We show that within the class of f(R) gravity theories, FLRW power-law perfect fluid solutions only exist for R^n gravity. This significantly restricts the set of exact cosmologica…
On the co-existence of matter dominated and accelerating solutions in f(G)-gravity
Naureen Goheer, Rituparno Goswami, Peter K. S. Dunsby +1
Working within the theory of modified Gauss-Bonnet gravity, we show that FLRW--like power--law solutions only exist for a very special class of f(G)theories. Furthermore, we point…
Dynamics of f(R)-cosmologies containing Einstein static models
Naureen Goheer, Rituparno Goswami, Peter K. S. Dunsby
We study the dynamics of homogeneous isotropic FRW cosmologies with positive spatial curvature in -gravity, paying special attention to the existence of Einstein static model…
Detection of Hot Gas in Galaxy Groups via the Sunyaev-Zel'dovich Effect
K. Moodley, R. Warne, N. Goheer +1
Motivated by the observed shortfall of baryons in the local universe, we investigate the ability of high resolution cosmic microwave background (CMB) experiments to detect hot gas…
The Existence of Einstein Static Universes and their Stability in Fourth order Theories of Gravity
Rituparno Goswami, Naureen Goheer, Peter K. S. Dunsby
We investigate whether or not an Einstein Static universe is a solution to the cosmological equations in gravity. It is found that only one class of theories admits a…