On the Ejection of Dark Matter from Globular Clusters
Astrophysics of Galaxies
2020-05-25 v2 Cosmology and Nongalactic Astrophysics
Abstract
We investigate analytically whether in a close encounter with a star, a Dark Matter particle can be accelerated above the escape speed of a Globular Cluster and be ejected. We find that this mechanism is not sufficient to eject a massive, extended Dark Matter halo by the present time. Combined with observations of isolated Globular Clusters that may not have had their halos tidally stripped, these results cast doubt on the scenario in which Globular Clusters formed in Dark Matter halos.
Cite
@article{arxiv.1910.00665,
title = {On the Ejection of Dark Matter from Globular Clusters},
author = {Travis J. Hurst and Andrew R. Zentner},
journal= {arXiv preprint arXiv:1910.00665},
year = {2020}
}