Relation between gamma-rays and emission lines for the gamma-ray loud blazars

The relation between the gamma-ray and the emission line luminosities for a sample of 36 gamma-ray loud blazars is investigated; an apparent correlati on between them, L gamma proportional to L-Line(0.69+/-0.11) with a correla tion coefficient r = 0.741 and a chance probability of p = 1.9 x 10(-6), is found. It is found, however, that there is no intrinsic correlation betwee n them: the apparent correlation is due to the redshift dependence in a flu x-limited sample. Thus no evidence is found to support the argument that th e up-scattered soft photons are from the broad emission lines. Our analysis does not conflict with the SSC model. The disk-jet symbiosis and radis/gam ma-ray correlation found in the literature are also discussed. The radio/ga mma-ray correlation may be an apparent correlation caused by the boasting e ffect since both bands are strongly beamed.