Eridanus Supervoid

E540385

astronomical structure cosmic void

Eridanus Supervoid is an unusually large and sparse region of space with significantly fewer galaxies than average, often studied in connection with anomalies in the cosmic microwave background.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
Boötes Void	1
Eridanus Supervoid canonical	1
Eridanus Void	1

How this entity was disambiguated

This entity first appeared as the object of triple T5723773 — 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: Eridanus Supervoid
Context triple: [Eridanus, containsDeepSkyObject, Eridanus Supervoid]

A. Shapley Supercluster
The Shapley Supercluster is one of the most massive known concentrations of galaxies in the nearby universe, exerting a significant gravitational influence on surrounding cosmic structures.
B. Perseus–Pisces Supercluster
The Perseus–Pisces Supercluster is a massive, elongated concentration of galaxy clusters stretching hundreds of millions of light-years across space and forming one of the most prominent large-scale structures in the nearby universe.
C. Laniakea Supercluster
Laniakea Supercluster is a vast cosmic structure encompassing the Milky Way and hundreds of thousands of other galaxies, forming one of the largest known galaxy superclusters in the observable universe.
D. Great Attractor region
The Great Attractor region is a massive gravitational anomaly in intergalactic space that strongly influences the motion of nearby galaxy clusters, including those in the Hydra–Centaurus Supercluster.
E. Hydra–Centaurus Supercluster
The Hydra–Centaurus Supercluster is a massive nearby concentration of galaxy clusters that forms one of the dominant structures in our cosmic neighborhood and serves as a major component of the larger Laniakea Supercluster.
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: Eridanus Supervoid
Target entity description: Eridanus Supervoid is an unusually large and sparse region of space with significantly fewer galaxies than average, often studied in connection with anomalies in the cosmic microwave background.

A. Shapley Supercluster
The Shapley Supercluster is one of the most massive known concentrations of galaxies in the nearby universe, exerting a significant gravitational influence on surrounding cosmic structures.
B. Perseus–Pisces Supercluster
The Perseus–Pisces Supercluster is a massive, elongated concentration of galaxy clusters stretching hundreds of millions of light-years across space and forming one of the most prominent large-scale structures in the nearby universe.
C. Laniakea Supercluster
Laniakea Supercluster is a vast cosmic structure encompassing the Milky Way and hundreds of thousands of other galaxies, forming one of the largest known galaxy superclusters in the observable universe.
D. Great Attractor region
The Great Attractor region is a massive gravitational anomaly in intergalactic space that strongly influences the motion of nearby galaxy clusters, including those in the Hydra–Centaurus Supercluster.
E. Hydra–Centaurus Supercluster
The Hydra–Centaurus Supercluster is a massive nearby concentration of galaxy clusters that forms one of the dominant structures in our cosmic neighborhood and serves as a major component of the larger Laniakea Supercluster.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	astronomical structure ⓘ cosmic void ⓘ
comparedTo	typical cosmic voids ⓘ
discoveredUsing	galaxy surveys ⓘ optical surveys ⓘ radio observations ⓘ
hasAlternativeName	Eridanus Void ⓘ linked to: Eridanus Supervoid
hasApproximateDiameter	hundreds of megaparsecs ⓘ
hasApproximateRedshift	z ≈ 0.2 ⓘ
hasContext	cosmic variance studies ⓘ large-angle anomalies in the CMB ⓘ search for non-standard cosmology ⓘ
hasProperty	associated with CMB anomalies ⓘ candidate explanation for CMB Cold Spot ⓘ extended along line of sight ⓘ low galaxy density compared to cosmic mean ⓘ possibly one of the largest known voids ⓘ significantly fewer galaxies than average ⓘ sparse distribution of galaxies ⓘ statistical significance under discussion in literature ⓘ three-dimensional underdensity ⓘ underdense region of the universe ⓘ unusually large ⓘ
hasSignificance	challenges standard cosmological model if anomaly confirmed ⓘ constrains cosmological parameters ⓘ tests Gaussianity of CMB fluctuations ⓘ tests isotropy of the universe ⓘ
hasUncertainty	exact size is debated ⓘ role in producing CMB Cold Spot is debated ⓘ
inferredFrom	CMB temperature maps ⓘ galaxy number counts ⓘ photometric redshift surveys ⓘ
locatedIn	constellation Eridanus ⓘ southern celestial hemisphere ⓘ
observedBy	Planck spacecraft ⓘ WMAP ⓘ
partOf	large-scale structure of the universe ⓘ
possibleCauseOf	part of observed CMB Cold Spot temperature decrement ⓘ
relatedTo	CMB Cold Spot ⓘ linked to: cosmic microwave background cosmic microwave background ⓘ dark energy ⓘ integrated Sachs–Wolfe effect ⓘ linked to: Sachs–Wolfe effect ΛCDM model ⓘ linked to: Lambda-CDM model
studiedInField	cosmology ⓘ large-scale structure of the universe ⓘ observational cosmology ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Eridanus → containsDeepSkyObject → Eridanus Supervoid ⓘ

Eridanus Supervoid → hasAlternativeName → Eridanus Void ⓘ

linked to: Eridanus Supervoid

Boötes → containsDeepSkyObject → Boötes Void ⓘ

subject linked to: Bootes