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28 March 2024
 
  » arxiv » astro-ph/0103031

 Article overview


The Radio and Gamma-Ray Luminosities of Blazars
L. Zhang ; K.S. Cheng ; J.H. Fan ;
Date 2 Mar 2001
Subject astro-ph
AffiliationYNU), K.S. Cheng (HKU), J.H. Fan (Cfa, Gu
AbstractBased on the $gamma$-ray data of blazars in the third EGRET catalog and radio data at 5 GHz, we studied the correlation between the radio and $gamma$-ray luminosities using two statistical methods. The first method was the partial correlation analysis method, which indicates that there exist correlations between the radio and $gamma$-ray luminosities in both high and low states as well as in the average case. The second method involved a comparison of expected $gamma$-ray luminosity distribution with the observed data using the Kolmogorov-- Smirnov (KS) test. In the second method, we assumed that there is a correlation between the radio and $gamma$-ray luminosities and that the $gamma$-ray luminosity function is proportional to the radio luminosity function. The KS test indicates that the expected gamma-ray luminosity distributions are consistent with the observed data in a reasonable parameter range. Finally, we used different $gamma$-ray luminosity functions to estimate the possible ’observed’ $gamma$-ray luminosity distributions by GLAST.
Source arXiv, astro-ph/0103031
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