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The Radio and Gamma-Ray Luminosities of Blazars | L. Zhang
; K.S. Cheng
; J.H. Fan
; | Date: |
2 Mar 2001 | Subject: | astro-ph | Affiliation: | YNU), K.S. Cheng (HKU), J.H. Fan (Cfa, Gu | Abstract: | Based 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 | Services: | Forum | Review | PDF | Favorites |
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