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Session 5 - High Luminosity AGN.
Display session, Monday, June 10
Tripp Commons,

[5.06] Statistical Effects of Doppler Beaming on Flux Limited Samples of Relativistic Jets

M. L. Lister, A. P. Marscher (Boston Univ.)

We use Monte Carlo simulations to examine the effects of Doppler beaming on flux-limited samples of compact radio sources representative of relativistic jets found in active galactic nuclei (AGN). The canonical jets in our model have intrinsic (unbeamed) synchrotron luminosities L = \Gamma^\xi \ell, where the bulk Lorentz factors (\Gamma) of the parent population are distributed according to a power law. Such a relation between the intrinsic synchrotron luminosity and \Gamma (with \xi < 0) is predicted by relativistic jet models based on hydrodynamics such as that of Blandford amp; Rees (1974; MNRAS, 169, 395). Studies of Doppler beaming to date have considered only the case where \xi = 0 and have not included an intrinsic luminosity function for the parent population. We discuss and compare the predicted apparent velocity, redshift, and flux density distributions of the \xi = 0 and \xi < 0 models to the combined Pearson amp; Readhead/Caltech-Jodrell (PR/CJ) survey (Vermeulen 1995, Proc. Natl. Acad. Sci., 92, 11385) of flat-spectrum AGN selected on the basis of 5 GHz flux density. We also examine the effects of the \xi parameter and intrinsic Lorentz factor distribution on the viewing angles, Doppler factors, and other observable properties of flux-limited samples of compact radio sources.

Program listing for Monday