Titre du document

Clusters and cosmology

Lien vers le document
Nom du Corpus

AstroConcepts

Auteur(s)
  • Neta A Bahcall
Affiliation(s)
  • Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA
Résumé

Rich clusters of galaxies, the largest virialized systems known, place powerful constraints on cosmology. Some of the fundamental questions that can be addressed with clusters of galaxies include: What is the mass-density of the universe? and how is the mass distributed? We show that several independent methods utilizing clusters of galaxies – cluster mass-to-light ratio, baryon fraction in clusters, and cluster evolution – all indicate the same robust result: the mass-density of the universe is low, ?m?0.25, and the mass approximately traces light on large scales. Combining the cluster results with recent observations of high-redshift supernovae and the cosmic microwave background anisotropy spectrum indicates a remarkable consistency among these independent, nearly orthogonal methods; the combined results, presented in a cosmic triangle plot, suggest a universe that is lightweight, is accelerating, and is flat.

Langue(s) du document
Anglais
Année de publication
2000
Revue

Physics Reports

Éditeur
Elsevier
Type de publication
journal
Type de document
article
Présence de XML structuré
Oui
Version de PDF
1.2
Score de qualité du texte
7.969
Nom du concept
  • Dark energy
Mots-clés d’auteur
  • 98.65.Cw
  • 98.65.Dx
  • 98.80.Es
  • 98.80.?k
  • 95.35.+d
  • Cosmology
  • Dark matter
  • Clusters of galaxies
Catégories Science-Metrix
  • 1 - natural sciences ; 2 - physics & astronomy ; 3 - nuclear & particles physics
Catégories Inist
  • 1 - sciences appliquees, technologies et medecines ; 2 - sciences exactes et technologie ; 3 - terre, ocean, espace ; 4 - astronomie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Physics and Astronomy ; 3 - General Physics and Astronomy
Catégories WoS
  • 1 - science ; 2 - physics, multidisciplinary
Identifiant ISTEX
F536E84C87023528E79320E183D7E06D1E33357E
ark:/67375/6H6-TM1BT42Z-D
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