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

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Orfeu Bertolami (Author) FCUP; Pedro Frazão (Author) Other; Jorge Páramos (Author) Other

Journal

Title: Physical Review D: Particles and fields

Vol. 86

Initial page: 044034

ISSN: 0556-2821

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 53 Citations

Scopus - 54 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: 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.

Language: Portuguese

Type (Professor's evaluation): Scientific