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Active galactic nucleus

An active galactic nucleus (AGN) is a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars. Such excess, non-stellar emissions have been observed in the radio, microwave, infrared, optical, ultra-violet…

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Particle acceleration

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Active galactic nucleus

Nodes123
Edges122
Triples39
Avg. degree1.98
Density0.01626
Components1

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Active galactic nucleus

Top relations

related to history · 23
Active galactic nucleus → Active, AGN, Another, Carl Seyfert, Centaurus, Cygnus, During, Edward Fath, Further, Galaxies, Heber Curtis, In, Messier, Milton Humason, NGC, Nicholas Mayall, Rudolph Minkowski, Seyfert, Seyfert's, Some
see also · 7
Active galactic nucleus → Active, AGN, Astrophysical, Concept, Largest, Stream, Type

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Important terminology

agn accretion galaxy galaxies emission radio black hole quasars jet quasar optical radiation active seyfert jets x-ray lines luminosity objects

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
the mass of the central black holeinstance ofThe observed characteristics of an AGN depend on several properties0.80text
the rate of gas accretion onto the black holeinstance ofThe observed characteristics of an AGN depend on several properties0.80text
the orientation of the accretion diskinstance ofThe observed characteristics of an AGN depend on several properties0.80text
the degree of obscuration of the nucleus by dustinstance ofThe observed characteristics of an AGN depend on several properties0.80text
and presence or absence of jetsinstance ofThe observed characteristics of an AGN depend on several properties0.80text
these are known as Seyfert galaxies in honor of Seyfert's pioneering work.The development of radio astronomy was a major catalyst to understanding AGNinstance ofActive galaxies0.80text
Messier 87instance ofSome of the earliest detected radio sources are nearby active elliptical galaxies0.80text
Centaurus Ainstance ofSome of the earliest detected radio sources are nearby active elliptical galaxies0.80text
the Milky Way galaxyinstance ofare likely to be more impacted than planets located in typical elliptical galaxies such as M87 or spiral galaxies0.80text
Active galactic nucleusrelated to historyDuring0.60section
Active galactic nucleusrelated to historyAGN0.60section
Active galactic nucleusrelated to historySome0.60section

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