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- Universitat de BarcelonaES63 papers
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5 papers · 1 filter
Synchronization in a ring of pulsating oscillators with bidirectional couplings
A. Diaz-Guilera, C. J. Perez-Vicente, A. Arenas
We study the dynamical behavior of an ensemble of oscillators interacting through short range bidirectional pulses. The geometry is 1D with periodic boundary conditions. Our intere…
Substructure in the ENACS clusters
J. M. Solanes, E. Salvador-Sole, G. Gonzalez-Casado
Subclustering is investigated in a set of 67 rich cluster galaxy samples extracted from the ESO Nearby Abell Cluster Survey (ENACS) catalog. We apply four well-known statistical te…
The Growth of Dark-Matter Halos. The Effects of Accretion and Mergers
E. Salvador-Sole, A. Manrique, J. M. Solanes
High resolution cosmological N-body simulations show that the density profiles of dark matter halos in hierarchical cosmogonies are universal, with low mass halos typically denser…
On the calculation of the linear stability parameter of periodic orbits
C. Barbera, E. Athanassoula
In this paper we propose an improved method for calculating Henon's stability parameter, which is based on the differential of the Poincare map using the first variational equation…
Kinematics of the southern galaxy cluster Abell 3733
J. M. Solanes, P. Stein
We report radial velocities for 99 galaxies with projected positions within 30 arcmin of the center of the cluster A3733 obtained with the MEFOS multifiber spectrograph at the 3.6-…