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Accueil du site > Séminaires > Halo bias and mass-concentration (...)

Halo bias and mass-concentration relation from stacked weak lensing by galaxy clusters

Giovanni Covone

Évènements associés

  • Le lundi 1er décembre 2014 de 11:00 à 12:00 - lieu : Salle 108, Bâtiment des Communs - Meudon

Weak gravitational lensing is a powerful tool to investigate the structure of galaxy clusters and of the Universe on its largest scales. I will report about recent results (based on data from the CFHT Lensing Survey) to constrain the mass-concentration relation for galaxy clusters and the properties of the large-scale distribution, in particular the measurement of the so-called halo bias on the cluster scale. Moreover, I will present a method based on the joint analysis of clustering and stacked shear to break the degeneracy between cosmological parameters and the halo bias in weak lensing measurements.