148 citations · 270 across the 4 of their papers we have counts for
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The supernova Hubble diagram for off-center observers in a spherically symmetric inhomogeneous universe
Havard Alnes, Morad Amarzguioui
We have previously shown that spherically symmetric, inhomogeneous universe models can explain both the supernova data and the location of the first peak in the CMB spectrum withou…
CMB anisotropies seen by an off-center observer in a spherically symmetric inhomogeneous universe
Havard Alnes, Morad Amarzguioui
The current authors have previously shown that inhomogeneous, but spherically symmetric universe models containing only matter can yield a very good fit to the SNIa data and the po…
An inhomogeneous alternative to dark energy?
Havard Alnes, Morad Amarzguioui, Oyvind Gron
Recently, there have been suggestions that the apparent accelerated expansion of the universe is not caused by repulsive gravitation due to dark energy, but is rather a result of i…
Cosmological constraints on f(R) gravity theories within the Palatini approach
M. Amarzguioui, O. Elgaroy, D. F. Mota +1
We investigate f(R) theories of gravity within the Palatini approach and show how one can determine the expansion history, H(a), for an arbitrary choice of f(R). As an example, we…
Can a dust dominated universe have accelerated expansion?
H. Alnes, M. Amarzguioui, O. Gron
Recently, there has been suggestions that the apparent accelerated expansion of the universe is due not to a cosmological constant, but rather to inhomogeneities in the distributio…
Combined constraints on Cardassian models from supernovae, CMB and large-scale structure observations
Morad Amarzguioui, Oystein Elgaroy, Tuomas Multamaki
We confront Cardassian models with recent observational data. These models can be viewed either as purely phenomenological modifications of the Friedmann equation, or as arising fr…