Statistics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.207..223m&link_type=abstract
In ESA Plasma Astrophys. p 223-224 (SEE N85-22270 12-90)
Statistics
Cosmic Plasma, Galactic Clusters, Luminosity, Velocity Distribution, X Ray Spectra, Data Sampling, Heao 2, Red Shift
Scientific paper
Einstein Observatory data which support the power-law relation between the X-ray luminosity and the velocity dispersion proposed by Solinger and Tucker for rich clusters of galaxies are discussed. Investigation of the red shifts of individual clusters reveals that the power law relation is strongly altered when divided into two subgroups with different red shifts. It is concluded that, due to the small samples statistics and selection effects, it is not possible to draw definite conclusions as to the nature of physical processes in the intergalactic plasma from the observed index of the Solinger and Tucker relation.
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