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.

Radio Programs

Quasars IV An astronomical navigation system Friday, February 8, 2013
Centaurus A A galaxy with a loud voice Sunday, April 29, 2012

Featured Images

Combined X-ray, optical, and radio view of the galaxy Centaurus A
Busy Galaxy Sunday, April 29, 2012
M87 black hole
Busy Black Hole Wednesday, August 11, 2010


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