4 papers
Topology of the universe from COBE-DMR; a wavelet approach
G. Rocha, L. Cayon, R. Bowen +4
In this paper we pursue a new technique to search for evidence of a finite Universe, making use of a spherical mexican-hat wavelet decomposition of the microwave background fluctua…
CMB constraints on spatial variations of the vacuum energy density
P. P. Avelino, A. Canavezes, J. P. M. de Carvalho +1
In a recent article, a simple `spherical bubble' toy model for a spatially varying vacuum energy density was introduced, and type Ia supernovae data was used to constrain it. Here…
Recovering the Topology of the Initial Density Fluctuations Using the IRAS Point Source Catalogue Redshift Survey
A. Canavezes, J Sharpe
We apply the reconstruction technique of Nusser & Dekel (1992) to the recently available Point Source Catalogue Redshift Survey (PSCz) in order to subtract the phase correlations t…
The Topology of the IRAS Point Source Catalogue Redshift Survey
A. Canavezes, V. Springel, S. J. Oliver +10
We investigate the topology of the new Point Source Catalogue Redshift Survey (PSCz) of IRAS galaxies by means of the genus statistic. The survey maps the local Universe with appro…