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arXiv · 1111.3167

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

Orfeu Bertolami·Pedro Frazão·Jorge Páramos
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Abstract

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.

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Orfeu Bertolami, Pedro Frazão, Jorge Páramos. 2013-01-30. Mimicking dark matter in galaxy clusters through a non-minimal gravitational coupling with matter. https://doi.org/10.1103/physrevd.86.044034

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