PKS 0743-67: AN ULTRALUMINOUS ACCRETION DISK AND A HIGH KINETIC LUMINOSITY JET

摘要

Deep radio observations of the quasar PKS 0743-67 are presented that reveal a central engine capable of driving jets with enormous kinetic luminosity, Q > 4.1 x 10~(46) ergs s~(-1). This result is significant because archival optical spectral data indicate that the accretion disk has a thermal luminosity L_(bol) > 2 x 10~(47) ergs s~(-1). Furthermore, estimates of the mass of the central black hole from line widths indicate that L_(bol)/L_(Edd) ≈ 1. This suggests that neither a large L_(bol) nor L_(bol)/L_(Edd) suppresses jet power in quasars, despite claims that they do in the recent literature. Earlier studies have found L_(bol) and Q to be correlated in blazars. However, by removing the BL Lac objects and leaving only the quasars in the sample, we found that Q is very weakly correlated with L_(bol) in the subsample.