Radio sources
type: Concept
related: Radio galaxies

Tailed radio galaxies
type: Concept
broader: Radio galaxies

Fanaroff-Riley radio galaxies
type: Concept
broader: Radio galaxies

Radio galaxies
narrower: Tailed radio galaxies
narrower: Giant radio galaxies
narrower: Fanaroff-Riley radio galaxies
definition: A galaxy that is extremely luminous at radio wavelengths between 10 MHz and 100 GHz. The radio luminosity of a strong radio galaxy (10^37 - 10^39 watts) can be up to a million times greater than the radio output of an ordinary galaxy and up to a hundred times greater than the optical luminosity of a galaxy such as the Milky Way. The optical counterparts of radio galaxies are usually an elliptical galaxy. Radio galaxies often exhibit jet structure from a compact nucleus. They typically display two radio lobes that are often approximately aligned with the jets observed in the optical and that may extend for millions of light-years.
broader: Active galaxies
modified: 2020-11-03T21:08:48.086Z
modified: 2020-11-03T21:09:00.606Z
type: Concept
contributor: AAS Frey.Katie Admin
related: Radio sources

Giant radio galaxies
type: Concept
broader: Radio galaxies

Active galaxies
type: Concept
narrower: Radio galaxies