Limits on Self-Interacting Dark Matter
Abstract
We impose new severe constraints on the self-interactions of fermionic asymmetric dark matter based on observations of nearby old neutron stars. WIMP self-interactions mediated by Yukawa- type interactions can lower significantly the number of WIMPs necessary for gravitational collapse of the WIMP population accumulated in a neutron star. Even nearby neutron stars located at regions of low dark matter density can accrete sufficient number of WIMPs that can potentially collapse, form a mini black hole, and destroy the host star. Based on this, we derive constraints on the WIMP self-interactions which in some cases are by several orders of magnitude stricter than the ones from the bullet cluster (which are currently considered the most stringent).
Keywords
Cite
@article{arxiv.1111.4364,
title = {Limits on Self-Interacting Dark Matter},
author = {Chris Kouvaris},
journal= {arXiv preprint arXiv:1111.4364},
year = {2015}
}
Comments
5 pages