6 papers
Cosmology with GTC. A combined mm-optical galaxy cluster survey
J. M. Diego, E. Martinez-Gonzalez, J. L. Sanz +2
The CMB Planck satellite (ESA) will provide a catalogue of nearly 30000 galaxy clusters (Sunyaev-Zel'dovich effect) between redshift 0 and approx. 2-3 (depending on the cosmologica…
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…
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…
Partition function based analysis of CMB maps
J. M. Diego, E. Martinez-Gonzalez, J. L. Sanz +2
We present an alternative method to analyse cosmic microwave background (CMB) maps. We base our analysis on the study of the partition function. This function is used to examine th…
The absorbers towards Q0836+113
N. Benitez, E. Martinez-Gonzalez, J. L. Sanz +2
We have performed RIJHK_S imaging of the field around the z=2.67 quasar Q0836+113, which presents several metal line and a damped Lyαabsorption systems in its spectrum. The images…
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…