# Siam Physics Congress 2016

8-10 June 2016
Asia/Bangkok timezone

## The study of scaling relations of massive galaxy clusters using weak gravitional lensing technique

Jun 9, 2016, 11:00 AM
15m
Room J1

### Room J1

Oral presentaion Astronomy, Astrophysics and Cosmology

### Speaker

Mr Anirut Phriksee (Chiang Mai University)

### Description

Weak gravitational lensing of galaxy cluster provides a direct method
to probe their mass distribution. We report our preliminary results on the
analysis of a complete sample of $\sim 50$ massive galaxy clusters,
in the redshift range 0.1 - 0.6, in the Canada France Hawaii Telescope Legacy Survey (CFHT-LS), drawn from the large sample built by Covone et al. (2014). For each galaxy cluster, we determined the mass distribution from the radial shear profile, the mass-to-light ratio and the optical richness,in order to study how the galaxy population in clusters
trace mass as a function of scale. We have studied the scaling relation of mass with optical luminosity and richness for massive clusters. Moreover, by assuming that the average mass-to-light of galaxy clusters is very close to the cosmological values, we can determined the mass density of the universe.

Keywords: weak gravitational lensing : galaxy cluster

### Primary author

Mr Anirut Phriksee (Chiang Mai University)

### Co-authors

Dr Eric Jullo (Aix-Marseille University) Prof. Giovanni Covone (University of Naples "Federico II") Dr Mauro Sereno (University of Bologna) Prof. Siramas Komonjinda (Chiang Mai University)

### Presentation materials

There are no materials yet.