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Observational Constraints on General Relativistic Energy Conditions, Cosmic Matter Density and Dark Energy from X-Ray Clusters of Galaxies and Type-Ia Supernovae
Peter Schuecker, Robert R. Caldwell, Hans Böhringer +3
New observational constraints on the cosmic matter density and an effectively redshift-independent equation of state parameter of the dark energy are obtained while sim…
The REFLEX Galaxy Cluster Survey VII: Omega_m and sigma_8 from cluster abundance and large-scale clustering
Peter Schuecker, Hans Böhringer, Chris A. Collins +1
For the first time the large-scale clustering and the mean abundance of galaxy clusters are analysed simultaneously to get precise constraints on the normalized cosmic matter densi…
Parameter constraints for flat cosmologies from CMB and 2dFGRS power spectra
Will J. Percival, Will Sutherland, John A. Peacock +24
We constrain flat cosmological models with a joint likelihood analysis of a new compilation of data from the cosmic microwave background (CMB) and from the 2dF Galaxy Redshift Surv…
Studying large-scale structure with the 2dF Galaxy Redshift Survey
J. A. Peacock, M. Colless, I. Baldry +25
The 2dF Galaxy Redshift Survey is the first to observe more than 100,000 redshifts. This allows precise measurements of many of the key statistics of galaxy clustering, in particul…
The ROSAT-ESO Flux-Limited X-Ray (REFLEX) Galaxy Cluster Survey VI: Constraints on the cosmic matter density from the KL power spectrum
Peter Schuecker, Luigi Guzzo, Chris A. Collins +1
The Karhunen-Loéve (KL) eigenvectors and eigenvalues of the sample correlation matrix are used to analyse the spatial fluctuations of the REFLEX clusters of galaxies. The method av…
The 2dF Galaxy Redshift Survey: The environmental dependence of galaxy star formation rates near clusters
Ian Lewis, Michael Balogh, Roberto De Propris +30
We have measured the equivalent width of the H-alpha emission line for 11006 galaxies brighter than M_b=-19 (LCDM) at 0.05<z<0.1 in the 2dF Galaxy Redshift Survey (2dF), in the fie…