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arXiv · 0707.2692

Flat rotation curves using scalar-tensor theories

Jorge L. Cervantes-Cota·M. A. Rodriguez-Meza·Dario Nunez
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Abstract

We computed flat rotation curves from scalar-tensor theories in their weak field limit. Our model, by construction, fits a flat rotation profile for velocities of stars. As a result, the form of the scalar field potential and DM distribution in a galaxy are determined. By taking into account the constraints for the fundamental parameters of the theory $(λ, α)$, it is possible to obtain analytical results for the density profiles. For positive and negative values of $α$, the DM matter profile is as cuspy as NFW's.

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Jorge L. Cervantes-Cota, M. A. Rodriguez-Meza, Dario Nunez. 2007-07-18. Flat rotation curves using scalar-tensor theories. https://doi.org/10.1088/1742-6596%2F91%2F1%2F012007

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