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gptkbp:instanceOf
|
Astronomical object
|
|
gptkbp:alsoKnownAs
|
gptkb:QSO
gptkb:Quasar
|
|
gptkbp:apparentMagnitude
|
Up to 12.8 (brightest)
|
|
gptkbp:canBe
|
Radio-loud
Radio-quiet
|
|
gptkbp:category
|
active galactic nucleus
|
|
gptkbp:centralTo
|
gptkb:Supermassive_black_hole
|
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gptkbp:discoveredBy
|
gptkb:Maarten_Schmidt
|
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gptkbp:discoveredIn
|
1963
|
|
gptkbp:distanceFromEarth
|
Billions of light-years
|
|
gptkbp:emits
|
gptkb:X-rays
gptkb:Gamma_rays
gptkb:Radio_waves
Electromagnetic radiation
Visible light
|
|
gptkbp:firstIdentifiedBy
|
gptkb:Allan_Sandage
|
|
gptkbp:firstRadioSourceIdentifiedAsQSO
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gptkb:3C_273
|
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gptkbp:hasAbsoluteMagnitude
|
-26 to -30
|
|
gptkbp:hasAccretionDisk
|
Yes
|
|
gptkbp:hasFeature
|
Broad emission lines
Compact size
Strong radio emission (in some cases)
Variable brightness
|
|
gptkbp:hasHostGalaxyType
|
gptkb:galaxy
Elliptical galaxy
|
|
gptkbp:hasJet
|
Relativistic jets (in some cases)
|
|
gptkbp:hasRedshiftRange
|
0.06 to 7.5
|
|
gptkbp:hasVariabilityTimescale
|
Days to years
|
|
gptkbp:hostedBy
|
gptkb:Galaxies
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Quasi-Stellar Object
|
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gptkbp:locatedIn
|
Distant galaxies
|
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gptkbp:luminosity
|
Extremely high
|
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gptkbp:notableExample
|
gptkb:3C_273
gptkb:3C_48
gptkb:APM_08279+5255
gptkb:ULAS_J1342+0928
|
|
gptkbp:observedBy
|
gptkb:Very_Large_Array
gptkb:Sloan_Digital_Sky_Survey
gptkb:Hubble_Space_Telescope
|
|
gptkbp:powerSource
|
Gravitational energy
|
|
gptkbp:provides
|
Accretion of material onto supermassive black holes
|
|
gptkbp:redshift
|
High
|
|
gptkbp:spectrumOfActivity
|
Redshifted
|
|
gptkbp:studiedBy
|
Cosmology
Black hole physics
Galaxy evolution
|
|
gptkbp:studiedIn
|
Optical astronomy
Radio astronomy
|
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gptkbp:subclassOf
|
gptkb:Active_galactic_nuclei
|
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gptkbp:bfsParent
|
gptkb:QSO
|
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gptkbp:bfsLayer
|
5
|