AAS 195th Meeting, January 2000
Session 117. Active Galactic Nuclei: Modelling and Theory
Display, Saturday, January 15, 2000, 9:20am-4:00pm, Grand Hall

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[117.04] Propagation and Asymmetries of Compact Steep Spectrum Radio Sources

S. Jeyakumar (NCRA/TIFR), P.J. Wiita (GSU), D.J. Saikia (NCRA/TIFR), J.S. Hooda (Inst. Paper Sci. & Tech.)

As Compact Steep Spectrum radio sources have been shown to be more asymmetrical than larger sources of similar powers, there is a high probability that they interact with an asymmetric medium in the central regions of the host elliptical galaxy. We compute simple analytical models of the propagation of radio jets through various reasonable asymmetric situations and see that they can yield the range of arm-length and luminosity asymmetries that have been observed. We then generalize these models to allow for various viewing angles, and quantify the substantial enhancements of the asymmetries that can be produced in this fashion. We then perform two-dimensional (axisymmetric) numerical simulations of conical jets, along the lines of the most realistic of our analytical models, and find a similar trend. Finally, we present results of three-dimensional simulations which include finite opening angles and compare them with the analytical and two-dimensional numerical approximations.

This work was supported in part by NASA grant NAG 5-3098 and by RPE and Strategic Initiative Funds at GSU.

The author(s) of this abstract have provided an email address for comments about the abstract: wiita@chara.gsu.edu

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