Mimicking dark matter in galaxy clusters through a non-minimal gravitational coupling with matter

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Orfeu Bertolami (Autor) FCUP; Pedro Frazão (Autor) Outra; Jorge Páramos (Autor) Outra

Revista

Título: Physical Review D: Particles and fields

Vol. 86

Página Inicial: 044034

ISSN: 0556-2821

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 53 Citações

Scopus - 54 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-002-6WC

DOI: 10.1103/PhysRevD.86.044034

Abstract (EN): In this work, one shows that a specific non-minimal coupling between the scalar curvature and matter can mimic the dark matter component of galaxy clusters. For this purpose, one assesses the Abell cluster A586, a massive nearby relaxed cluster of galaxies in virial equilibrium, where direct mass estimates and strong-lensing determinations are possible. One then extends the dark matter mimicking to a large sample of galaxy clusters whose density profiles are obtained from the Chandra high quality data, also in virial equilibrium. The total density, which generally follows a cusped profile and reveals a very small baryonic component, can be effectively described within this framework.

Idioma: Português

Tipo (Avaliação Docente): Científica