The inhomogeneous jet parameters in active galactic nuclei

Details The inhomogeneous jet parameters in active galactic nuclei The inhomogeneous jet parameters in active galactic nuclei

1997-11-21

arxiv.org/abs/astro-ph/9711264v1

Astronomy and Astrophysics

Astrophysics

13 pages, 4 tables, 14 figures, AASTEX, to appear in ApJ

Scientific paper

10.1086/305182

The K\"onigl inhomogeneous jet model is applied to investigate the properties of the jets in Active Galactic Nuclei (AGNs). A sample of the AGNs is collected, in which the measurements of the angular size and radio flux density of the VLBI core, proper motion of the components in the jet, and X-ray flux density are included. The inhomogeneous jet parameters are derived with the same assumptions for all sources. A comparison among the parameters of different types of sources in the sample is presented. It is found that most of EGRET (Energetic Gamma-ray Experiment Telescope) sources have higher Doppler factor \delta, larger Lorentz factor \gamma, and smaller viewing angle \theta, when compared with the remaining sources in the sample. The statistical analyses show that the derived Doppler factor \delta is strongly correlated with the observed 22 GHz brightness temperature. Furthermore, there is a correlation between the relative $\gamma $-ray luminosity and the Doppler factor \delta. The implications of these results are discussed.

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