Radio galaxy evolution: what you can learn from a Brief Encounter

Details Radio galaxy evolution: what you can learn from a Brief Encounter Radio galaxy evolution: what you can learn from a Brief Encounter

1999-10-08

arxiv.org/abs/astro-ph/9910158v1

New Astron.Rev. 46 (2002) 75-87

Astronomy and Astrophysics

Astrophysics

invited talk at `Lifecycles of Radio Galaxies' workshop; eds John Biretta et al

Scientific paper

10.1016/S1387-6473(01)00160-9

We describe the pitfalls encountered in deducing from classical double radio source observables (luminosity, spectral index, redshift and linear size) the essential nature of how these objects evolve. We discuss the key role played by hotspots in governing the energy distribution of the lobes they feed, and subsequent spectral evolution. We present images obtained using the new 74 MHz receivers on the VLA and discuss constraints which these enforce on models of the backflow and ages in classical doubles.

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