Galaxy Cluster Cosmology beyond Cluster Number Counts
LUTH, Obs. Paris
In the past years, dedicated survey programs have provided increasingly large samples of galaxy cluster observations which have opened the way to probing cosmology with galaxy clusters. These carry a wealth of cosmological information encoded in the cluster abundance, spatial clustering and density profile. To date cosmological constraints have been mainly inferred from cluster number count measurements. In this talk I will review recent results and motivate the use of complementary galaxy cluster observables. In particular, I will discuss the use of cluster sparsity measurements as a novel cosmological probe.