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Clues to the origin of parsec to kilo-parsec jet misalignments in EGRET sources
Received 17 March 1999 / Accepted 21 December 1999
The apparent position angle difference PA between parsec and kilo-parsec jets in blazars can be related to the bending properties of the jets. We present correlations between the misalignment PA and the ratio of radio to broad-line emission for a sample of -ray blazars. The present study is limited to EGRET sources due to uniform data for the radio and optical properties of these sources being easily available. The broad-line emission is known to be a good indicator of the accretion power for both steep and flat-spectrum quasars. We find significant correlations between PA and the ratio of radio flux (total and radio core flux respectively) to broad-line flux, which is consistent with the beaming scenario. A weak correlation between PA and the ratio of extended radio to broad-line flux might imply that the intrinsic bend of the jet is related with the ratio of jet mechanical power to accretion power.
Key words: galaxies: active galaxies: jets galaxies: quasars: emission lines
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Online publication: March 17, 2000