45 citations · 138 across the 19 of their papers we have counts for
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Cosmic Crystallography of the Second Order
H. V. Fagundes, E. Gausmann
The cosmic crystallography method of Lehoucq et al. [1] produces sharp peaks in the distribution of distances between the images of cosmic sources. But the method cannot be applied…
Sources of CMB Spots in Closed Hyperbolic Universes
Helio V. Fagundes
The results of a previous paper by the author [Astrophys. J. 470, 43 (1996) are improved, through a more reliable technique for finding the location of sources whose images are on…
Cosmic Crystallography with a Pullback
Helio V. Fagundes, Evelise Gausmann
We present a modified version of the cosmic crystallography method, especially useful for testing closed models of negative spatial curvature. The images of clusters of galaxies in…
Cosmic Crystallography in Compact Hyperbolic Universes
H. V. Fagundes, E. Gausmann
We try to apply the cosmic crystallography method of Lehoucq, Lachieze-Rey, and Luminet to a universe model with closed spatial section of negative curvature. But the sharp peaks p…
On Multiple Images in Closed Universes
Helio V. Fagundes
Universes with multiconnected spatial sections predict multiple images of cosmic sources. A confusing terminology exists in the naming of these images as real ones vs. ghosts. Here…
On Closed Einstein-de Sitter Universes
Helio V. Fagundes, Evelise Gausmann
We briefly summarize the idea of cosmological models with compact, flat spatial sections. It has been suggested that, because of the COBE satellite's maps of the microwave backgrou…
A Perturbed Kantowski-Sachs Cosmological Model
H. V. Fagundes, M. A. M. Gonzalez
A numerical integration is made, starting with a Kantowski-Sachs (KS) model with an added initial perturbation at time one-tenth the age of the universe, and evolving up to the pre…