Statistical Effects of Doppler Beaming on Flux Limited Samples of Relativistic Jets

Details Statistical Effects of Doppler Beaming on Flux Limited Samples of Relativistic Jets Statistical Effects of Doppler Beaming on Flux Limited Samples of Relativistic Jets

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.0506l&link_type=abstract

American Astronomical Society, 188th AAS Meeting, #05.06; Bulletin of the American Astronomical Society, Vol. 28, p.827

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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 ) l, 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 & 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 & 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.

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