3 papers
astro-ph2001
A joint fit to the cosmological Model and the T-M and L_x-T relations using cluster data
J. M. Diego, E. Martinez-Gonzalez, J. L. Sanz +3
In this work we show how well can the cosmological parameters be constrained using galaxy cluster data. We also show how in the process of fitting the model which attempts to descr…
astro-ph2000
Constraints on Cluster Properties Using X-ray and Optical Data
J. M. Diego, E. Martinez-Gonzalez, J. L. Sanz +2
In this work we show that combining different cluster data sets is a powerful tool to constrain both, the cosmology and cluster properties. We assume a model with 9 parameters and…
astro-ph1996
CMB radiation power spectrum in CDM open universes up to 2nd order perturbations
Jose L. Sanz, Enrique Martinez-Gonzalez, Laura Cayon +2
A second--order perturbation theory approach is developed to calculate temperature anisotropies in the cosmic microwave background. Results are given for open universes and fluctua…