Velocity Dependence from Resonant Self-Interacting Dark Matter
High Energy Physics - Phenomenology
2019-02-27 v2 High Energy Astrophysical Phenomena
Abstract
The dark matter density distribution in small-scale astrophysical objects may indicate that dark matter is self-interacting, while observations from clusters of galaxies suggest that the corresponding cross section depends on the velocity. Using a model-independent approach, we show that resonant self-interacting dark matter (RSIDM) can naturally explain such a behavior. In contrast to what is often assumed, this does not require a light mediator. We present explicit realizations of this mechanism and discuss the corresponding astrophysical constraints.
Cite
@article{arxiv.1810.04709,
title = {Velocity Dependence from Resonant Self-Interacting Dark Matter},
author = {Xiaoyong Chu and Camilo Garcia-Cely and Hitoshi Murayama},
journal= {arXiv preprint arXiv:1810.04709},
year = {2019}
}
Comments
To match the journal version