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physical object > natural object > celestial body > collection of stars > galaxy > radio galaxy > double radio source

double radio source
subject			fact

double radio source	has definition A radio galaxy, the bulk of whose radio emission comes from two sources on opposite sides of the visual galaxy. The radiation is presumably the result of an explosion in the nucleus of the parent galaxy, which caused the ejection at high speed of energetic particles in two opposite directions. About one-third of all known radio galaxies are double sources.
	is a kind of radio galaxy
radio source	has wavelength radio
	is a part of celestial sphere
	has catalog radio source catalog
galaxy	has number of stars 106 to 1012
	has catalog galaxy catalog
celestial body	has spectra
physical object	has location or center of gravity
	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Kinds of double radio source :

• Cygnus A (5 facts) (3C 405, 2U 1957+40) - A double radio source, the third strongest radio source in the sky (after the Sun and Cas A), at one time believed to be caused by the collision of two galaxies. It has now been identified with a distant peculiar cD galaxy (z ≈ 0.056).

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