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physical object > natural object > celestial body > collection of stars > galaxy > radio galaxy > core-halo galaxy

core-halo galaxy comparison table

Subject	has definition	has abundance	is a kind of
radio galaxy	A galaxy that is extremely luminous at radio wavelengths. A radio galaxy is usually a giant elliptical - the largest galaxy in a cluster - and is a strong emitter of synchrotron radiation. M87 and M82 are examples.		radio source
core-halo galaxy	A class of radio source characterized by an emission "halo" surrounding a more intense "core". About 20% of the known extended radio sources are of the core-halo type.	20% of the known extended radio sources	radio galaxy

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