A new Cosmological Study Approach with a Volume Limited X-ray Cluster Sample

The application of galaxy clusters in constraining cosmological models iscurrently mostly limited by our uncertain knowledge of scaling relations of easyobservables and cluster mass. Most of the scaling relation studies are based onXray flux limited samples. Here we propose to take a new approach to studygalaxy cluster properties in a volumelimited sample. From the comparison offlux and volumelimited samples we would be able to determine the intrinsicscatter of scaling relations in an unambiguous way, providing an importantadvance in cluster cosmology studies. Apart from the cosmological application,the volumelimited survey of nearby clusters will also provide a great benchmarksample for all aspects of characterizing the properties of the cluster population. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]