3C 84
E554033
3C 84 is a powerful radio-loud active galactic nucleus associated with the central galaxy NGC 1275 in the Perseus Cluster, notable for its strong jets and variable emission across the electromagnetic spectrum.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 3C 84 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5911126 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 3C 84 Context triple: [Perseus constellation, contains, 3C 84]
-
A.
PGC 3085
PGC 3085 is a galaxy listed in the Principal Galaxies Catalogue, an astronomical catalog of known galaxies.
-
B.
PGC 3085
PGC 3085 is a dwarf irregular galaxy better known as the Small Magellanic Cloud, a nearby satellite of the Milky Way visible from the Southern Hemisphere.
-
C.
Scorpius X-1
Scorpius X-1 is a bright low-mass X-ray binary system and one of the strongest persistent X-ray sources in the sky, located in the constellation Scorpius.
-
D.
PGC 1384
PGC 1384 is a faint dwarf irregular galaxy in the Local Group, best known as the nearby galaxy IC 1613 in the constellation Cetus.
-
E.
Baade X
Baade X is a minor lunar impact crater located near the larger crater Baade on the Moon’s far side.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: 3C 84 Target entity description: 3C 84 is a powerful radio-loud active galactic nucleus associated with the central galaxy NGC 1275 in the Perseus Cluster, notable for its strong jets and variable emission across the electromagnetic spectrum.
-
A.
PGC 3085
PGC 3085 is a galaxy listed in the Principal Galaxies Catalogue, an astronomical catalog of known galaxies.
-
B.
PGC 3085
PGC 3085 is a dwarf irregular galaxy better known as the Small Magellanic Cloud, a nearby satellite of the Milky Way visible from the Southern Hemisphere.
-
C.
Scorpius X-1
Scorpius X-1 is a bright low-mass X-ray binary system and one of the strongest persistent X-ray sources in the sky, located in the constellation Scorpius.
-
D.
PGC 1384
PGC 1384 is a faint dwarf irregular galaxy in the Local Group, best known as the nearby galaxy IC 1613 in the constellation Cetus.
-
E.
Baade X
Baade X is a minor lunar impact crater located near the larger crater Baade on the Moon’s far side.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
active galactic nucleus
ⓘ
blazar-like AGN ⓘ radio galaxy core ⓘ |
| blackHoleMass | approximately 8×10^8 solar masses ⓘ |
| centralEngine | supermassive black hole ⓘ |
| createsStructure |
X-ray cavities in the Perseus Cluster gas
ⓘ
radio lobes ⓘ |
| distanceFromEarth |
approximately 230 million light-years
ⓘ
approximately 70 megaparsecs ⓘ |
| emits |
X-rays
ⓘ
gamma rays ⓘ infrared radiation ⓘ millimeter radiation ⓘ optical radiation ⓘ radio waves ⓘ |
| environment |
cool-core cluster environment
ⓘ
dense intracluster medium of the Perseus Cluster ⓘ |
| hasProperty |
compact radio core
ⓘ
kiloparsec-scale jets ⓘ parsec-scale jets ⓘ strong radio jets ⓘ variable emission across the electromagnetic spectrum ⓘ |
| hostGalaxy | NGC 1275 NERFINISHED ⓘ |
| interactsWith | intracluster medium of the Perseus Cluster ⓘ |
| isPartOf | NGC 1275 NERFINISHED ⓘ |
| locatedInCluster | Perseus Cluster NERFINISHED ⓘ |
| locatedInConstellation | Perseus NERFINISHED ⓘ |
| observedBy |
Chandra X-ray Observatory
NERFINISHED
ⓘ
Event Horizon Telescope NERFINISHED ⓘ Fermi Gamma-ray Space Telescope NERFINISHED ⓘ Hubble Space Telescope NERFINISHED ⓘ MAGIC telescopes NERFINISHED ⓘ VERA NERFINISHED ⓘ VLBA NERFINISHED ⓘ Very Long Baseline Interferometry NERFINISHED ⓘ XMM-Newton NERFINISHED ⓘ |
| radioCatalog | Third Cambridge Catalogue of Radio Sources NERFINISHED ⓘ |
| radioCatalogDesignation | 3C 84 NERFINISHED ⓘ |
| redshift | 0.0176 ⓘ |
| showsPhenomenon |
X-ray variability
ⓘ
gamma-ray flares ⓘ inverse Compton scattering ⓘ jet precession ⓘ radio outbursts ⓘ relativistic jets ⓘ superluminal motion in jets ⓘ synchrotron radiation ⓘ |
| spectralClass | radio-loud AGN ⓘ |
| usedAs |
laboratory for jet physics
ⓘ
probe of AGN feedback in clusters ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: 3C 84 Description of subject: 3C 84 is a powerful radio-loud active galactic nucleus associated with the central galaxy NGC 1275 in the Perseus Cluster, notable for its strong jets and variable emission across the electromagnetic spectrum.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.