Burkert profile
E820923
The Burkert profile is a cored dark matter halo density model commonly used in astrophysics to describe the flat central density distributions inferred from galaxy rotation curves.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Burkert profile canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9793710 — 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: Burkert profile Context triple: [Einasto density profile, comparedWith, Burkert profile]
-
A.
Brinkman
Brinkman is a surname of Germanic origin borne by various notable individuals across fields such as sports, politics, and the arts.
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B.
Balke
Balke is a Norwegian surname most notably associated with the 19th-century landscape painter Peder Balke.
-
C.
Beranek
Beranek is a surname most notably associated with Leo Beranek, an American acoustics expert and co-founder of the engineering firm Bolt, Beranek and Newman (BBN).
-
D.
Berkum
Berkum is a village and district within the municipality of Wachtberg in the German state of North Rhine-Westphalia.
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E.
Bortus
Bortus is a stoic, duty-bound Moclan officer serving as second-in-command aboard the exploratory spaceship in the sci-fi comedy series "The Orville."
- 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: Burkert profile Target entity description: The Burkert profile is a cored dark matter halo density model commonly used in astrophysics to describe the flat central density distributions inferred from galaxy rotation curves.
-
A.
Brinkman
Brinkman is a surname of Germanic origin borne by various notable individuals across fields such as sports, politics, and the arts.
-
B.
Balke
Balke is a Norwegian surname most notably associated with the 19th-century landscape painter Peder Balke.
-
C.
Beranek
Beranek is a surname most notably associated with Leo Beranek, an American acoustics expert and co-founder of the engineering firm Bolt, Beranek and Newman (BBN).
-
D.
Berkum
Berkum is a village and district within the municipality of Wachtberg in the German state of North Rhine-Westphalia.
-
E.
Bortus
Bortus is a stoic, duty-bound Moclan officer serving as second-in-command aboard the exploratory spaceship in the sci-fi comedy series "The Orville."
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysical model
ⓘ
dark matter halo density profile ⓘ |
| addresses | core–cusp problem ⓘ |
| appliesTo |
dwarf spheroidal galaxies
ⓘ
late-type spiral galaxies ⓘ |
| assumes | spherical symmetry ⓘ |
| asymptoticBehavior | ρ(r) ∝ r⁻³ at large radii ⓘ |
| category |
dark matter phenomenology
ⓘ
galactic structure models ⓘ |
| centralDensity | ρ₀ ⓘ |
| centralSlope | 0 ⓘ |
| comparedWith |
Einasto profile
NERFINISHED
ⓘ
isothermal sphere profile ⓘ |
| contrastsWith |
Navarro–Frenk–White profile
NERFINISHED
ⓘ
cuspy dark matter halo profiles ⓘ |
| coreDensityRadiusProduct | approximately constant across galaxies (empirical claim) ⓘ |
| densityExpression | ρ(x) = ρ₀ / [(1 + x)(1 + x²)] ⓘ |
| describes |
cored dark matter halo
ⓘ
flat central density distribution ⓘ |
| dimensionlessRadius | x = r/r₀ ⓘ |
| fits |
rotation curves of dwarf galaxies
ⓘ
rotation curves of low surface brightness galaxies ⓘ |
| hasCore | constant-density core ⓘ |
| hasCoreRadius | r₀ ⓘ |
| hasDensityCore | non-singular center ⓘ |
| hasFunctionalForm | ρ(r) = ρ₀ / [(1 + r/r₀)(1 + (r/r₀)²)] ⓘ |
| hasParameter |
r₀
ⓘ
ρ₀ ⓘ |
| implies | approximately flat rotation curves in inner regions ⓘ |
| introducedBy | Andreas Burkert NERFINISHED ⓘ |
| introducedIn | 1995 ⓘ |
| massProfile | M(r) = 4π ∫₀ʳ ρ(r′) r′² dr′ ⓘ |
| mathematicalForm | two-parameter density profile ⓘ |
| motivatedBy | galaxy rotation curves ⓘ |
| namedAfter | Andreas Burkert NERFINISHED ⓘ |
| outerSlope | -3 ⓘ |
| publication | Burkert 1995, Astrophysical Journal Letters NERFINISHED ⓘ |
| relatedConcept |
cored halo
ⓘ
dark matter distribution in galaxies ⓘ halo core radius ⓘ |
| usedFor |
deriving dark matter halo masses
ⓘ
fitting observed rotation curves ⓘ mass modeling of galaxies ⓘ |
| usedIn |
astrophysics
ⓘ
dark matter halo modeling ⓘ empirical scaling relations of dark matter halos ⓘ galaxy dynamics ⓘ |
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: Burkert profile Description of subject: The Burkert profile is a cored dark matter halo density model commonly used in astrophysics to describe the flat central density distributions inferred from galaxy rotation curves.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.