Statements (30)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:active_galactic_nucleus
|
| gptkbp:alsoKnownAs |
gptkb:BL_Lacertae_objects
|
| gptkbp:cataloguedIn |
gptkb:Roma-BZCAT
|
| gptkbp:centralEngine |
gptkb:black_hole
|
| gptkbp:characterizedBy |
optical polarization
featureless optical spectra rapid variability |
| gptkbp:discoveredBy |
gptkb:Edward_A._Fath
1929 |
| gptkbp:distance |
hundreds of millions to billions of light-years
|
| gptkbp:emits |
gptkb:X-rays
gptkb:gamma_rays gptkb:radio_waves |
| gptkbp:exhibits |
relativistic jets
|
| gptkbp:hostedBy |
gptkb:galaxy
giant elliptical galaxies |
| gptkbp:namedAfter |
gptkb:BL_Lacertae
|
| gptkbp:observedBy |
gamma-ray surveys
optical surveys radio surveys |
| gptkbp:polarization |
high
|
| gptkbp:redshift |
0.03 to 1.5
|
| gptkbp:relatedTo |
quasars
Seyfert galaxies |
| gptkbp:spectralEnergyDistribution |
double-peaked
|
| gptkbp:subclassOf |
gptkb:blazar
|
| gptkbp:variabilityTimescale |
hours to days
|
| gptkbp:bfsParent |
gptkb:Véron-Cetty_&_Véron_quasar_catalogue
|
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
BL Lac objects
|