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The core doninance parameter of extragalactic radio sources

ע⣺ՓAsronomy & Astrophysics June 11, 2003,1C14l
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J.H. Fan and J.S. Zhang
Certer for Astrophysics, Guangzhou University, Guangzhou, 510400, China

Abstract: In this paper, based on a paper by Liu Zhang(2002), we have chosen a sample of 542 extragalactic sources, for which we have calculated the core-dominance parameters and investigated the relation between core-dominance parameter and the core and extended luminosities. The core-dominance parameter of galaxies is smaller than that in quasars, which is smaller than that in BL Lac objects.
Key words BL Lacertae objects; general, galaxies; quasars-galaxies; Seyfert-galaxies; jet

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