APPLICATION OF PRINCIPAL COMPONENT ANALYSIS TO RADIO PROPERTIES OF QUASARS

The principal component analysis method has been applied to two sample s of nearby and distant quasars with well known radio data. Relationsh ips between physical parameters pertinent to radio morphology has been searched and the significant number of dimensions of the manifold has been found to be two. The results of this analysis confirm the existe nce of a redshift luminosity correlation for a subset of 36 nearby, bu t to a lesser extent for 43 distant, quasars. An anticorrelation seems to exist between luminosity and linear sizes for the last sample. On the other hand, application of this analysis to the above samples indi cates no correlation between the viewing angle and the other physical parameters.