62 citations · 104 across the 13 of their papers we have counts for
13 papers
Dynamics of Void and its Shape in Redshift Space
Kei-ichi Maeda, Nobuyuki Sakai, Roland Triay
We investigate the dynamics of a single spherical void embedded in a Friedmann-Lemaître universe, and analyze the void shape in the redshift space. We find that the void in the red…
Dark Energy: fiction or reality?
Roland Triay
Is Dark Energy justified as an alternative to the cosmological constant in order to explain the acceleration of the cosmic expansion ? It turns out that a straightforward dimen…
Voids in the distribution of galaxies and the Cosmological constant
Roland Triay, Henri-Hugues Fliche
With the motivation in mind to evaluate the contribution of the cosmological constant on the foam like patterns formation process in the distribution of galaxies, we investigat…
Euler-Poisson-Newton approach in Cosmology
Roland Triay, Henri-Hugues Fliche
This lecture provides us with Newtonian approaches for the interpretation of two puzzling cosmological observations that are still discussed subject : a bulk flow and a foam like s…
Spherical Voids in Newton-Friedmann Universe
Roland Triay, Henri-Hugues Fliche
We show that the cosmological constant favours significantly the growth of voids in the universe. This dynamical effect is investigated within a newtonian approach with an extensio…
effect in the cosmological expansion of voids
Henri-Hugues Fliche, Roland Triay
The dynamical effect of the cosmological constant on a single spherical void evolving in a the universe is investigated within a non linear perturbation of Newton-Friedmann mod…