MAssive Cluster Survey - meaning and definition. What is MAssive Cluster Survey
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What (who) is MAssive Cluster Survey - definition


MAssive Cluster Survey         
The MAssive Cluster Survey (MACS) compiled and characterized a sample of very X-ray luminous (and thus, by inference, massive), distant clusters of galaxies. The sample comprises 124 spectroscopically confirmed clusters at 0.
XMM Cluster Survey         
The XMM Cluster Survey (XCS) is a serendipitous X-ray galaxy cluster survey being conducted using archival data taken by ESA’s XMM-Newton satellite. Galaxy clusters trace the large scale structure of the universe, and their number density evolution with redshift provides a way to measure cosmological parameters, independent of cosmic microwave background experiments or supernovae cosmology projects.
Business cluster         
GEOGRAPHIC CONCENTRATION OF INTERCONNECTED BUSINESSES IN A PARTICULAR FIELD
Porter's cluster; Competitive cluster; Techno-cluster; Techno cluster; Industrial Cluster; Industry cluster; Retail cluster; Vertical cluster; Horizontal cluster; Sectoral cluster; Porter's Cluster; Industrial cluster; Economic cluster; Cluster effect
A business cluster is a geographic concentration of interconnected businesses, suppliers, and associated institutions in a particular field. Clusters are considered to increase the productivity with which companies can compete, nationally and globally.