The discovery of the accelerating universe in the late 1990s was a watershed moment in
modern cosmology, as it indicated the presence of a fundamentally new, dominant …

We review in detail a number of approaches that have been adopted to try and explain the
remarkable observation of our accelerating universe. In particular we discuss the arguments …

ABSTRACT The Wilkinson Microwave Anisotropy Probe (WMAP) 5-year data provide
stringent limits on deviations from the minimal, six-parameter Λ cold dark matter model. We …

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The properties of future singularities are investigated in the universe dominated by dark
energy including the phantom-type fluid. We classify the finite-time singularities into four …

In this paper, we use the type Ia supernovae data to constrain the holographic dark energy
model proposed by Li. We also apply a cosmic age test to this analysis. We consider in this …

We present constraints on the mean matter density, Ωm, dark energy density, ΩDE, and the
dark energy equation of state parameter, w, using Chandra measurements of the X-ray gas …

Higher-order theories of gravity have recently attracted a lot of interest as alternative
candidates to explain the observed cosmic acceleration without the need of introducing any …

Dark energy with the equation of state w (z) rapidly evolving from the dustlike (w≃ 0 at z∼ 1)
to the phantomlike (-1.2≲ w≲-1 at z≃ 0) has been recently proposed as the best fit for the …

This manuscript is devoted to the investigation of the Bianchi type I universe in the context of
f (R, T) gravity. For this purpose, we explore the exact solutions of locally rotationally …