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gptkbp:instanceOf
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Astronomical object
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gptkbp:alternativeName
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gptkb:SMBH
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gptkbp:canMerge
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Yes
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gptkbp:charge
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Neutral
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gptkbp:detects
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Gravitational effects
Accretion disk radiation
Stellar orbits
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gptkbp:distanceFromEarth
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Exceeds speed of light
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gptkbp:emits
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gptkb:Gravitational_waves
No light directly
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gptkbp:firstEvidence
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1960s
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gptkbp:formationTheories
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Accretion of mass over time
Collapse of massive gas clouds
Merging of smaller black holes
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gptkbp:hasEventHorizon
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Yes
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https://www.w3.org/2000/01/rdf-schema#label
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Supermassive black hole
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gptkbp:location
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Center of most massive galaxies
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gptkbp:notableExample
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gptkb:M87*
gptkb:Sagittarius_A*
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gptkbp:range
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10^5 to 10^10 solar masses
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gptkbp:roleInGalaxy
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Affects galaxy evolution
Powers active galactic nuclei
Powers quasars
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gptkbp:size
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Can be billions of kilometers across
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gptkbp:spin
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Can be high
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gptkbp:studiedBy
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gptkb:Event_Horizon_Telescope
gptkb:X-ray_telescopes
gptkb:Radio_telescopes
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gptkbp:surroundedBy
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Accretion disk
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gptkbp:surroundingRegion
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Accretion disk
Relativistic jets
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gptkbp:type
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Black hole
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gptkbp:bfsParent
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gptkb:Blazar
gptkb:Quasar
gptkb:Quasi-Stellar_Object
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gptkbp:bfsLayer
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6
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