University of Heidelberg

Talk Details

Monday, May 13, 2013 - 11:00am

Eleonora Sarli:

"Reconstructing the lensing potential of galaxy clusters from galaxy kinematics"

Abstract. Galaxy clusters represent an important probe for the nature of dark matter and its properties and are (or will be in the near future) studied by wide surveys in a broad range of wavebands. One of the striking features of galaxy clusters is the fact that they provide a multitude of observables through gravitational lensing, X-rays observations, the thermal Sunyaev-Zel'dovich effect and galaxy kinematics. These considerations suggested us the idea of combining all available information from these observables into a consistent joint, non-parametric method for the reconstruction of the cluster potential. In my talk I will present the algorithm we developed to reconstruct the lensing potential of galaxy clusters starting from the projected line-of-sight velocity dispersions of cluster galaxies.

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