Jet Propagation Through Irregular Media and the Impact of Lobes on Galaxy Formation

Details Jet Propagation Through Irregular Media and the Impact of Lobes on Galaxy Formation Jet Propagation Through Irregular Media and the Impact of Lobes on Galaxy Formation

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.293..235w&link_type=abstract

Astrophysics and Space Science, v. 293, Issue 1, p. 235-245 (2004).

Astronomy and Astrophysics

Astrophysics

4

Active Galaxies, Cosmology, Galaxy Formation, Hydrodynamics, Jets, Radio Continuum

Scientific paper

We review results of two- and three-dimensional simulations of jets striking clouds with a view toward determining the conditions under which extragalactic jets might stably survive such collisions, and thereby produce “dog-leg” or wide-angle-tail morphologies. Under most circumstances, the jet either destroys the cloud and has its stability little affected or it stalls and is rapidly destabilized by the impact. But there does appear to be a limited range in parameter space where jets can be deflected by clouds but still survive for an extended period. Some of the effects of radio lobes on protogalactic clouds are also considered. At redshifts above 2, the number of radio galaxies (RGs) is much larger than it is in the local universe, and their lobes may well have filled a large fraction of the web of baryonic matter that is still forming galaxies at that epoch. The overpressures in those lobes can trigger extensive star formation on galactic scales and also may have major implications for the spreading of magnetic fields and metals through the intergalactic medium.

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