Large Scale Simulations of the Jet-Igm Interaction: Special Issue: VIRTUAL astrophysical jets

Author: Krause, Martin G. H.

Source: Astrophysics and Space Science, Volume 293, Number 1, 2004 , pp. 255-262(8)

Publisher: Springer

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Abstract:

In a parameter study extending to jet densities of 10^-5 times the ambient one, I have recently shown that light large-scale jets start their lives in a spherical bow shock phase. This allows an easy description of the sideways bow shock propagation in that phase. Here, I present new, bipolar, simulations of very light jets in 2.5D and 3D, reaching the observationally relevant scale of > 200 jet radii. Deviations from the early bow shock propagation law are expected because of various effects. The net effect is, however, shown to remain small. I calculate the X-ray appearance of the shocked cluster gas and compare it with Cygnus A and 3C 317. Rings, bright spots and enhancements inside the radio cocoon may be explained.

Keywords: extragalactic jets; jet-IGM interaction; hydrodynamics; simulations; very light jets

Document Type: Research article

DOI: http://dx.doi.org/10.1023/B:ASTR.0000044674.57913.c9

Affiliations: 1: Landessternwarte Königstuhl, 69117 Heidelberg, Germany., Email: M.Krause@lsw.uni-heidelberg.de

Publication date: 2004-01-01