Determination of Dark Matter Halo Mass from Dynamics of Satellite Galaxies

@article{Li2017DeterminationOD,
  title={Determination of Dark Matter Halo Mass from Dynamics of Satellite Galaxies},
  author={Zhaozhou Li and Y. Jing and Yong-Zhong Qian and Zhen Yuan and Donghai Zhao},
  journal={arXiv: Astrophysics of Galaxies},
  year={2017}
}
We show that the mass of a dark matter halo can be inferred from the dynamical status of its satellite galaxies. Using 9 dark-matter simulations of halos like the Milky Way (MW), we find that the present-day substructures in each halo follow a characteristic distribution in the phase space of orbital binding energy and angular momentum, and that this distribution is similar from halo to halo but has an intrinsic dependence on the halo formation history. We construct this distribution directly… Expand
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