|
gptkbp:instanceOf
|
Astronomical Object
|
|
gptkbp:accretionDisk
|
Present
|
|
gptkbp:alternativeName
|
gptkb:SMBH
|
|
gptkbp:canMerge
|
Yes
|
|
gptkbp:discoveredBy
|
1960s
|
|
gptkbp:distanceFromEarth
|
Exceeds speed of light
Sagittarius A* is ~26,000 light-years
|
|
gptkbp:evidence
|
Stellar orbits, accretion disks, relativistic jets
|
|
gptkbp:example
|
gptkb:M87*
gptkb:Sagittarius_A*
|
|
gptkbp:formationTheories
|
Direct collapse of gas clouds
Growth by accretion
Mergers of smaller black holes
|
|
gptkbp:hasEventHorizon
|
Yes
|
|
gptkbp:HawkingRadiation
|
Negligible
|
|
gptkbp:hostedBy
|
Elliptical galaxies
Spiral galaxies
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Supermassive Black Hole
|
|
gptkbp:location
|
Center of most massive galaxies
|
|
gptkbp:loveInterest
|
Correlates with bulge mass of host galaxy
Correlates with velocity dispersion of stars
|
|
gptkbp:notableFor
|
gptkb:First_image_of_M87*_(2019)
|
|
gptkbp:observableEffects
|
gptkb:Active_galactic_nuclei
gptkb:Gravitational_lensing
gptkb:Quasars
Relativistic jets
X-ray emission
|
|
gptkbp:observedBy
|
gptkb:M87
gptkb:Milky_Way
gptkb:NGC_1277
gptkb:Andromeda_Galaxy
|
|
gptkbp:powerOutput
|
Can power blazars
Can power quasars
Can power radio galaxies
|
|
gptkbp:range
|
10^5 to 10^10 solar masses
|
|
gptkbp:roleInCosmology
|
Galaxy evolution
Feedback mechanisms
Regulation of star formation
|
|
gptkbp:SchwarzschildRadius
|
Proportional to mass
|
|
gptkbp:spin
|
Can be high (Kerr black holes)
|
|
gptkbp:studiedBy
|
gptkb:Event_Horizon_Telescope
gptkb:Radio_telescopes
gptkb:Gravitational_wave_observatories
X-ray observatories
|
|
gptkbp:type
|
Black Hole
|
|
gptkbp:bfsParent
|
gptkb:Oasis
|
|
gptkbp:bfsLayer
|
5
|