You are here

Radio Galaxies

A particular type of active galaxy that emits more light at radio wavelengths than at visible wavelengths, also known as a radio-luminous galaxy or radio-loud galaxy. Radio galaxies are driven by non-thermal emission. Radio telescopes show that some radio galaxies, called extended radio galaxies, have lobes of radio emission extending millions of light-years from their nuclei. Centaurus A is a nearby example of an extended radio galaxy that features two outer lobes 650,000 and 1,350,000 light-years in diameter. In contrast, compact radio galaxies emit radio lobes not much larger than the galactic nucleus.

Featured Images

radio image of an odd radio circle

Ring of Mystery March 22, 2022

Galaxy Centaurus A

Loud and Clear May 23, 2019

Radio Programs

Megamasers Powering up some distant galaxies February 7, 2022