An asymmetric relativistic model for classical double radio sources

Details An asymmetric relativistic model for classical double radio sources An asymmetric relativistic model for classical double radio sources

1999-05-20

arxiv.org/abs/astro-ph/9905263v1

Astronomy and Astrophysics

Astrophysics

Oral report at the 194th IAU Symp. on "Activity in galaxies and related phenomena", held in Byurakan, Armenia, August 17-21, 1

Scientific paper

An asymmetric relativistic model for FRII radio sources is described which takes account of both relativistic effects and intrinsic/environmental asymmetries to explain the observed structural asymmetry of their radio lobes. A key feature of the model is jet-sidedness, which can now be determined for about 80% of the FRII sources in the 3CRR complete sample. It is shown that a simple asymmetric relativistic model can account for a wide range of observational data, and that the relativistic and intrinsic asymmetry effects are of comparable importance. The mean translational speed of the lobes is 0.12c with a standard deviation 0.04c. The results are in agreement with an orientation-based unified scheme in which the critical angle separating the radio galaxies from the radio quasars is about 50 degrees.

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