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The Cluster of Galaxies Abell 970
L. Sodre, D. Proust, H. V. Capelato +4
We present a dynamical analysis of the galaxy cluster Abell 970 based on a new set of radial velocities measured at ESO, Pic du Midi and Haute-Provence observatories. Our analysis…
Quasar Variability in the Framework of Poissonian Models
R. Cid Fernandes, L. Sodre, L. Vieira da Silva +1
In this paper we review the basic Poissonian formulation of quasar variability, using it as a mathematical tool to extract relevant parameters such as the energy, rate and lifetime…
Gravitational Lensing by Nearby Clusters of Galaxies
Eduardo S. Cypriano, Laerte Sodre', Luis E. Campusano +5
We present an estimation of the expected number of arcs and arclets in a sample of nearby (z<0.1) clusters of galaxies, that takes into account the magnitude limit of the objects a…