|
gptkbp:instanceOf
|
gptkb:blazar
active galactic nucleus
|
|
gptkbp:apparentMagnitude
|
13.9
|
|
gptkbp:catalogue
|
gptkb:Markarian_catalog
PGC catalog
UGC catalog
|
|
gptkbp:centralBlackHoleMass
|
~1 billion solar masses
|
|
gptkbp:declination
|
+39° 45′ 37″
|
|
gptkbp:discoveredBy
|
gptkb:Benjamin_Markarian
|
|
gptkbp:distanceFromEarth
|
456 million light-years
|
|
gptkbp:emits
|
gptkb:X-rays
gptkb:gamma_rays
gptkb:radio_waves
optical light
|
|
gptkbp:firstDetectedAsGammaRaySource
|
1996
|
|
gptkbp:galacticLatitude
|
+38.87°
63.60°
|
|
gptkbp:hostedBy
|
giant elliptical galaxy
|
|
gptkbp:hostGalaxyDiameter
|
~100,000 light-years
|
|
gptkbp:hostGalaxyMass
|
~10^12 solar masses
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Markarian 501
|
|
gptkbp:jetOrientation
|
pointed toward Earth
|
|
gptkbp:locatedIn
|
constellation Hercules
|
|
gptkbp:notableEvent
|
major gamma-ray flare in 1997
|
|
gptkbp:notableFor
|
TeV blazar activity
variable gamma-ray emission
|
|
gptkbp:observedBy
|
gptkb:VERITAS
gptkb:MAGIC
gptkb:Fermi_Gamma-ray_Space_Telescope
gptkb:H.E.S.S.
|
|
gptkbp:otherName
|
Mrk 501
PGC 59107
UGC 10599
|
|
gptkbp:radioLoudness
|
radio-loud
|
|
gptkbp:redshift
|
0.034
|
|
gptkbp:rightAscension
|
16h 53m 52.2s
|
|
gptkbp:spectralType
|
gptkb:BL_Lacertae_object
|
|
gptkbp:superluminalMotionObserved
|
yes
|
|
gptkbp:synchrotronPeakFrequency
|
high (HBL)
|
|
gptkbp:variant
|
highly variable
|
|
gptkbp:bfsParent
|
gptkb:Blazar
|
|
gptkbp:bfsLayer
|
6
|