Model for Gravitational Interaction between Dark Matter and Baryons

Details Model for Gravitational Interaction between Dark Matter and Baryons Model for Gravitational Interaction between Dark Matter and Baryons

2003-04-23

arxiv.org/abs/hep-ph/0304228v2

Phys.Rev.Lett. 91 (2003) 141301

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, final version

Scientific paper

10.1103/PhysRevLett.91.141301

We propose a phenomenological model where the gravitational interaction between dark matter and baryons is suppressed on small, subgalactic scales. We describe the gravitational force by adding a Yukawa contribution to the standard Newtonian potential and show that this interaction scheme is effectively suggested by the available observations of the inner rotation curves of small mass galaxies. Besides helping in interpreting the cuspy profile of dark matter halos observed in N-body simulations, this potential regulates the quantity of baryons within halos of different masses.

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