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gptkbp:instanceOf
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gptkb:galaxy
astronomer
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gptkbp:abbreviation
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gptkb:AGN
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gptkbp:affects
|
interstellar medium
galaxy evolution
|
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gptkbp:alternativeName
|
Active_galactic_nucleus
Seyfert_galaxy
|
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gptkbp:canBe
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radio-loud
radio-quiet
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gptkbp:centralTo
|
black hole
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gptkbp:characterizedBy
|
bright nucleus
strong emission lines
|
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gptkbp:contains
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black hole
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gptkbp:discoveredBy
|
gptkb:Carl_Seyfert
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gptkbp:discoveredIn
|
1943
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gptkbp:distance
|
local universe to high redshift
|
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gptkbp:drivesOn
|
galactic winds
|
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gptkbp:emits
|
gptkb:X-rays
gptkb:gamma_rays
gptkb:radio_waves
infrared radiation
radiation therapy
visible light
|
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gptkbp:example
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gptkb:Circinus_Galaxy
gptkb:NGC_1068
gptkb:NGC_4151
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gptkbp:firstDescribed
|
1943
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gptkbp:foundIn
|
gptkb:galaxy
spiral galaxies
|
|
gptkbp:fractionOfSpiralGalaxies
|
about 10%
|
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gptkbp:hasComponent
|
broad-line region
dusty torus
narrow-line region
|
|
gptkbp:hasType
|
gptkb:Dragon
gptkb:galaxy
gptkb:LINER
gptkb:blazar
gptkb:Type_I_Seyfert_galaxy
active galactic nucleus
Type II Seyfert galaxy
|
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gptkbp:hostedBy
|
gptkb:galaxy
|
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gptkbp:luminosity
|
can outshine host galaxy
|
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gptkbp:mayInclude
|
broad emission lines
relativistic jets
narrow emission lines
|
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gptkbp:namedAfter
|
gptkb:Carl_Seyfert
|
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gptkbp:observedBy
|
gptkb:Very_Large_Array
gptkb:Chandra_X-ray_Observatory
gptkb:Hubble_Space_Telescope
gptkb:Fermi_Gamma-ray_Space_Telescope
|
|
gptkbp:powerSource
|
gravitational energy
|
|
gptkbp:produces
|
jets
outflows
|
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gptkbp:provides
|
accretion of matter onto supermassive black hole
|
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gptkbp:redshift
|
low to moderate
|
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gptkbp:relatedTo
|
galaxy formation
cosmic evolution
black hole growth
|
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gptkbp:studiedBy
|
astronomer
|
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gptkbp:studiedIn
|
extragalactic astronomy
|
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gptkbp:subclassOf
|
active galactic nucleus
|
|
gptkbp:surroundedBy
|
accretion disk
|
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gptkbp:variant
|
can be variable on different timescales
|
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gptkbp:bfsParent
|
gptkb:galaxy
|
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gptkbp:bfsLayer
|
4
|