Title:	Giant radio galaxies via inverse Compton weakened jets
Authors:	Wiita, P.J. Rosen, Alexander Gopal-Krishna Saripalli, Lakshmi
Keywords:	astronomical models compton effect inverse scattering radio galaxies galactic mass intergalactic media interstellar matter red shift relativistic effects synchrotron radiation
Issue Date:	1989
Publisher:	Springer-Verlag
Citation:	Hot spots in extragalactic radio sources, Proceedings of the Workshop, Tegernsee, Federal Republic of Germany, 1988, p173
Abstract:	Both analytical and numerical models for the propagation of relativistic jets through a hot interstellar medium (ISM) and into an even hotter intergalactic medium (IGM) have been considered. The models by Gopal-Krishna and Wiita (1987), and Wiita and Gopal-Krishna (1987, 1988) were extended to allow for intrinsically extremely powerful jets, which may start off advancing relativistically through the interstellar medium. Eventually the energy density in the lobes becomes comparable to that of the microwave background, and inverse Compton losses of the synchrotron emitting electrons against the background photons become important. It is argued that only powerful radio engines are responsible for giant radio galaxies (GRGs, those whose linear size exceeds 1.5 Mpc), most of the observed peculiarities of the GRGs, such as their rarity, moderate radio flux and relatively strong radio cores can be explained.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/5593
Copyright:	1989 Springer-Verlag
Appears in Collections:	Research Papers (A&A)

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