
%0 Journal Article
%A Ubachukwu, A. A. 
%A Ugwoke, A. C. 
%A Chukwude, A. E. 
%T Dependence of Faraday Effects on Radio Luminosity and Redshift
%J Australian Journal of Physics
%D 1999/03/31
%V 52
%N 1
%P 147-151
%K 
%R https://doi.org/10.1071/P98004
%U https://www.publish.csiro.au/paper/P98004 
%X Quantitative estimates are provided for the influence of luminosity selection effects present in a bright source sample on the observed correlation of the depolarisation rate &#923; &half; with redshift z . It is shown that the observed correlation is partly intrinsic and partly due to luminosity effects. More specifically, we find that &#126;46% of the observed &#923; &half; correlation with z can be attributed to strong luminosity selection effects in the sample. This shows that a significant fraction (&#126;54%) of the observed correlation is cosmological in origin. It is concluded that there is a cosmological evolution of &#923; &half;, over and above that resulting from luminosity selection effects, which may be related to the epoch dependent properties of the ambient medium through which the radio source components propagate. 
