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gptkbp:instanceOf
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Astronomical object
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gptkbp:alsoKnownAs
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gptkb:QSO
gptkb:Quasar
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gptkbp:apparentMagnitude
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Bright (despite distance)
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gptkbp:cataloguedIn
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gptkb:3C_catalogue
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gptkbp:discoveredBy
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gptkb:Maarten_Schmidt
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gptkbp:discoveredIn
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1963
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gptkbp:distanceFromEarth
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Billions of light-years
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gptkbp:emits
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gptkb:X-rays
gptkb:Radio_waves
Electromagnetic radiation
Optical light
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gptkbp:example
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gptkb:3C_273
gptkb:3C_48
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gptkbp:firstIdentifiedBy
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gptkb:Allan_Sandage
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gptkbp:foundIn
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Distant universe
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gptkbp:hasAbsorptionLines
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Intervening material
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gptkbp:hasEddingtonLuminosity
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Approaches theoretical limit
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gptkbp:hasGammaRayEmission
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Some
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gptkbp:hasHostEnvironment
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Dense galactic nucleus
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gptkbp:hasHostGalaxy
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gptkb:galaxy
Elliptical galaxy
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gptkbp:hasJet
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Relativistic jet
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gptkbp:hasRedshiftRange
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0.06 to >7
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gptkbp:hasUltravioletEmission
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Yes
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gptkbp:hasVariability
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Rapid
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gptkbp:hostedBy
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gptkb:galaxy
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https://www.w3.org/2000/01/rdf-schema#label
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Quasi-stellar object
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gptkbp:infraredPort
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Yes
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gptkbp:luminosity
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Extremely high
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gptkbp:mass
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Supermassive black hole (millions to billions solar masses)
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gptkbp:polarization
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Variable
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gptkbp:powerSource
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Gravitational energy
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gptkbp:provides
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Accretion of material onto supermassive black hole
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gptkbp:redshift
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High
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gptkbp:similarTo
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Star (in optical images)
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gptkbp:spectrumOfActivity
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Broad emission lines
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gptkbp:studiedBy
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Cosmology
Galaxy evolution
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gptkbp:studiedIn
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Optical astronomy
Radio astronomy
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gptkbp:subspecies
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Broad absorption line quasar
Radio-loud quasar
Radio-quiet quasar
Type 1 quasar
Type 2 quasar
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gptkbp:type
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active galactic nucleus
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gptkbp:usedAs
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Standard candle (in some studies)
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gptkbp:bfsParent
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gptkb:Quasar
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gptkbp:bfsLayer
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6
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