53 citations · 109 across the 17 of their papers we have counts for
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Can dark energy explain the observed outflow in galaxy clusters?
M. Donnari, M. Arca-Sedda, M. Merafina
Recent observations of the Virgo cluster and the Local Group suggested that some galaxies are flowing out from their parent cluster. This may be the signature that dark energy (DE)…
Formation and evolution of heavy sub-structures in the centre of galaxy clusters: the local effect of dark energy
Manuel Arca Sedda, Martina Donnari, Marco Merafina
We discuss how the centres of galaxy clusters evolve in time, showing the results of a series of direct N-body simulations. In particular, we followed the evolution of a galaxy clu…
Galaxy clusters in presence of dark energy: a kinetic approach
Marco Merafina, Gennady S. Bisnovatyi-Kogan, Martina Donnari
Context. The external regions of galaxy clusters may be under strong influence of the dark energy, discovered by observations of the SN Ia at redshift z < 1. Aims. The presence of…
Self-gravitating Newtonian models of fermions with anisotropy and cutoff energy in their distribution function
Marco Merafina, Giuseppe Alberti
Systems of self-gravitating fermions constitute a topic of great interest in astrophysics, due to the wide field of applications. In this paper, we consider the gravitational equil…
Dark energy and the structure of the Coma cluster of galaxies
A. D. Chernin, G. S. Bisnovatyi-Kogan, P. Teerikorpi +3
{We consider the Coma cluster of galaxies as a gravitationally bound physical system embedded in the perfectly uniform static dark energy background as implied by the CDM cosmol…